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><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">個人用ツール</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="利用者メニュー" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_ja.wikipedia.org&uselang=ja"><span>寄付</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=%E7%89%B9%E5%88%A5:%E3%82%A2%E3%82%AB%E3%82%A6%E3%83%B3%E3%83%88%E4%BD%9C%E6%88%90&returnto=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95" title="アカウントを作成してログインすることをお勧めしますが、必須ではありません"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> 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accesskey="y"><span>投稿記録</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/%E7%89%B9%E5%88%A5:%E3%83%88%E3%83%BC%E3%82%AF%E3%83%9A%E3%83%BC%E3%82%B8" title="このIPアドレスからなされた編集についての議論 [n]" accesskey="n"><span>トーク</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="サイト"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="目次" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">目次</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">サイドバーに移動</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">非表示</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">ページ先頭</div> </a> </li> <li id="toc-記数法" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#記数法"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>記数法</span> </div> </a> <ul id="toc-記数法-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-命数法" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#命数法"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>命数法</span> </div> </a> <button aria-controls="toc-命数法-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>命数法サブセクションを切り替えます</span> </button> <ul id="toc-命数法-sublist" class="vector-toc-list"> <li id="toc-数詞" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#数詞"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>数詞</span> </div> </a> <ul id="toc-数詞-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-単位系" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#単位系"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>単位系</span> </div> </a> <ul id="toc-単位系-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-関連項目" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#関連項目"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>関連項目</span> </div> </a> <ul id="toc-関連項目-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-参考文献" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#参考文献"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>参考文献</span> </div> </a> <ul id="toc-参考文献-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="目次" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="目次の表示・非表示を切り替え" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">目次の表示・非表示を切り替え</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">二十四進法</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="特定の記事の別の言語版に移動します。利用可能な言語2件" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-2" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">2の言語版</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-en badge-Q70893996 mw-list-item" title=""><a href="https://en.wikipedia.org/wiki/Base_24" title="英語: Base 24" lang="en" hreflang="en" data-title="Base 24" data-language-autonym="English" data-language-local-name="英語" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Tetravigesimala_talsystemet" title="スウェーデン語: Tetravigesimala talsystemet" lang="sv" hreflang="sv" data-title="Tetravigesimala talsystemet" data-language-autonym="Svenska" data-language-local-name="スウェーデン語" class="interlanguage-link-target"><span>Svenska</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q43561#sitelinks-wikipedia" title="言語間リンクを編集" class="wbc-editpage">リンクを編集</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="名前空間"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95" title="本文を閲覧 [c]" accesskey="c"><span>ページ</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/%E3%83%8E%E3%83%BC%E3%83%88:%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95" rel="discussion" title="本文ページについての議論 [t]" accesskey="t"><span>ノート</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="別の言語に切り替える" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">日本語</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="表示"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95"><span>閲覧</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=edit" title="このページのソースコードを編集する [e]" accesskey="e"><span>編集</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=history" title="このページの過去の版 [h]" accesskey="h"><span>履歴表示</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="ページツール"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="ツール" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">ツール</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">ツール</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">サイドバーに移動</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">非表示</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="その他の操作" > <div class="vector-menu-heading"> 操作 </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95"><span>閲覧</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=edit" title="このページのソースコードを編集する [e]" accesskey="e"><span>編集</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=history"><span>履歴表示</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> 全般 </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/%E7%89%B9%E5%88%A5:%E3%83%AA%E3%83%B3%E3%82%AF%E5%85%83/%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95" title="ここにリンクしている全ウィキページの一覧 [j]" accesskey="j"><span>リンク元</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/%E7%89%B9%E5%88%A5:%E9%96%A2%E9%80%A3%E3%83%9A%E3%83%BC%E3%82%B8%E3%81%AE%E6%9B%B4%E6%96%B0%E7%8A%B6%E6%B3%81/%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95" rel="nofollow" title="このページからリンクしているページの最近の更新 [k]" accesskey="k"><span>関連ページの更新状況</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%E3%81%AE%E3%82%A2%E3%83%83%E3%83%97%E3%83%AD%E3%83%BC%E3%83%89" title="ファイルをアップロードする [u]" accesskey="u"><span>ファイルをアップロード</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/%E7%89%B9%E5%88%A5:%E7%89%B9%E5%88%A5%E3%83%9A%E3%83%BC%E3%82%B8%E4%B8%80%E8%A6%A7" title="特別ページの一覧 [q]" accesskey="q"><span>特別ページ</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&oldid=88182534" title="このページのこの版への固定リンク"><span>この版への固定リンク</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=info" title="このページについての詳細情報"><span>ページ情報</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=%E7%89%B9%E5%88%A5:%E3%81%93%E3%81%AE%E3%83%9A%E3%83%BC%E3%82%B8%E3%82%92%E5%BC%95%E7%94%A8&page=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&id=88182534&wpFormIdentifier=titleform" title="このページの引用方法"><span>このページを引用</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=%E7%89%B9%E5%88%A5:UrlShortener&url=https%3A%2F%2Fja.wikipedia.org%2Fwiki%2F%25E4%25BA%258C%25E5%258D%2581%25E5%259B%259B%25E9%2580%25B2%25E6%25B3%2595"><span>短縮URLを取得する</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=%E7%89%B9%E5%88%A5:QrCode&url=https%3A%2F%2Fja.wikipedia.org%2Fwiki%2F%25E4%25BA%258C%25E5%258D%2581%25E5%259B%259B%25E9%2580%25B2%25E6%25B3%2595"><span>QRコードをダウンロード</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> 印刷/書き出し </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=%E7%89%B9%E5%88%A5:%E3%83%96%E3%83%83%E3%82%AF&bookcmd=book_creator&referer=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95"><span>ブックの新規作成</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=%E7%89%B9%E5%88%A5:DownloadAsPdf&page=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=show-download-screen"><span>PDF 形式でダウンロード</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&printable=yes" title="このページの印刷用ページ [p]" accesskey="p"><span>印刷用バージョン</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> 他のプロジェクト </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q43561" title="関連付けられたデータリポジトリ項目へのリンク [g]" accesskey="g"><span>ウィキデータ項目</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="ページツール"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="表示"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">表示</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">サイドバーに移動</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">非表示</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">出典: フリー百科事典『ウィキペディア（Wikipedia）』</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ja" dir="ltr"><p><b>二十四進法</b>（にじゅうよんしんほう）とは、<a href="/wiki/24" title="24">24</a> を<a href="/wiki/%E4%BD%8D%E5%8F%96%E3%82%8A%E8%A8%98%E6%95%B0%E6%B3%95" title="位取り記数法">底</a>（てい）とし、底およびその<a href="/wiki/%E5%86%AA" class="mw-redirect" title="冪">冪</a>を基準にして数を表す方法である。 </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="記数法"><span id=".E8.A8.98.E6.95.B0.E6.B3.95"></span>記数法</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=edit&section=1" title="節を編集: 記数法"><span>編集</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><b>二十四進記数法</b>とは、24 を底とする<a href="/wiki/%E4%BD%8D%E5%8F%96%E3%82%8A%E8%A8%98%E6%95%B0%E6%B3%95" title="位取り記数法">位取り記数法</a>である。慣用に従い、通常の<a href="/wiki/%E3%82%A2%E3%83%A9%E3%83%93%E3%82%A2%E6%95%B0%E5%AD%97" title="アラビア数字">アラビア数字</a>は<a href="/wiki/%E5%8D%81%E9%80%B2%E6%95%B0" class="mw-redirect" title="十進数">十進数</a>とし、二十四進記数法の表記は<a href="/wiki/%E6%8B%AC%E5%BC%A7" title="括弧">括弧</a>および下付の 24 で表す。二十四進記数法で表された数を<b>二十四進数</b>と呼ぶ。 </p><p>一般には、0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F, G, H, I, J, K, L, M, N の 24 個の数字を用いる。右端あるいは<a href="/wiki/%E5%B0%8F%E6%95%B0%E7%82%B9" title="小数点">小数点</a>で 1 の桁を表す。数字の意味する数は、左に 1 桁ずれると 24 倍になり、右に 1 桁ずれると 1/24 になる。(11)<sub>24</sub> という表記において、左の「1」は二十四を表し、右の「1」は一を表し、合わせて二十五を表す。I と 1 および O と 0 は紛らわしいので、18 から 23 を表すのに I, J, K, L, M, N の代わりに J, K, L, M, N, P を用いることもある。 </p><p>同様に、二十四進記数法では (50)<sub>24</sub> は <a href="/wiki/120" title="120">120</a> (5×24<sup>1</sup>) を、(100)<sub>24</sub>は <a href="/wiki/576" title="576">576</a> (1×24<sup>2</sup>) を意味する。 </p> <div class="mw-heading mw-heading2"><h2 id="命数法"><span id=".E5.91.BD.E6.95.B0.E6.B3.95"></span>命数法</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=edit&section=2" title="節を編集: 命数法"><span>編集</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><b>二十四進命数法</b>とは、24 を底とする<a href="/wiki/%E5%91%BD%E6%95%B0%E6%B3%95" title="命数法">命数法</a>である。 </p> <div class="mw-heading mw-heading3"><h3 id="数詞"><span id=".E6.95.B0.E8.A9.9E"></span>数詞</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=edit&section=3" title="節を編集: 数詞"><span>編集</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/%E8%87%AA%E7%84%B6%E8%A8%80%E8%AA%9E" title="自然言語">自然言語</a>では、<a href="/wiki/%E3%83%91%E3%83%97%E3%82%A2%E8%AB%B8%E8%AA%9E" title="パプア諸語">パプア諸語</a>（<a href="/wiki/%E3%83%91%E3%83%97%E3%82%A2%E3%83%8B%E3%83%A5%E3%83%BC%E3%82%AE%E3%83%8B%E3%82%A2" title="パプアニューギニア">パプアニューギニア</a>）の<span title="リンク先の項目はまだありません。新規の執筆や他言語版からの翻訳が望まれます。"><a href="/w/index.php?title=%E3%82%A6%E3%83%B3%E3%83%96%E3%83%BB%E3%82%A6%E3%83%B3%E3%82%B0%E8%AA%9E&action=edit&redlink=1" class="new" title="「ウンブ・ウング語」 (存在しないページ)">ウンブ・ウング語</a><span style="font-size: 0.77em; font-weight: normal;" class="noprint">（<a href="https://en.wikipedia.org/wiki/Kaugel_language" class="extiw" title="en:Kaugel language">英語版</a>）</span></span><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> (Umbu-Ungu) が二十四進法の<a href="/wiki/%E6%95%B0%E8%A9%9E" title="数詞">数詞</a>を持つ<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>。内部に<a href="/wiki/%E5%9B%9B%E9%80%B2%E6%B3%95" title="四進法">四進法</a>を含み、また 24 を超えて 32 まで数詞がある複雑な体系である。以下にウンブ・ウング語の数詞を示す。 </p> <table class="wikitable" border="1" style="text-align:center"> <tbody><tr> <th>1 </th> <td>telu </td></tr> <tr> <th>2 </th> <td>talu </td></tr> <tr> <th>3 </th> <td>yepoko </td></tr> <tr> <th>4 </th> <td>kise </td></tr> <tr> <th>5 </th> <td>te(lu)pakara </td></tr> <tr> <th>6 </th> <td>talupakara </td></tr> <tr> <th>7 </th> <td>yepokopakara </td></tr> <tr> <th>8 </th> <td>eŋgaki </td></tr> <tr> <th>9 </th> <td>rurepoŋga telu </td></tr> <tr> <th>10 </th> <td>rurepoŋga talu </td></tr> <tr> <th>11 </th> <td>rurepoŋga yepoko </td></tr> <tr> <th>12 </th> <td>rurepo </td></tr> <tr> <th>13 </th> <td>malapuŋga telu </td></tr> <tr> <th>14 </th> <td>malapuŋga talu </td></tr> <tr> <th>15 </th> <td>malapuŋga yepoko </td></tr> <tr> <th>16 </th> <td>malapu </td></tr> <tr> <th>20 </th> <td>supu </td></tr> <tr> <th>24 </th> <td>tokapu </td></tr> <tr> <th>28 </th> <td>alapu </td></tr> <tr> <th>32 </th> <td>polaŋgipu </td></tr> <tr> <th>48 </th> <td>tokapu talu </td></tr> <tr> <th>72 </th> <td>tokapu yepoko </td></tr> <tr> <th>576 </th> <td>tokapu tokapu </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="単位系"><span id=".E5.8D.98.E4.BD.8D.E7.B3.BB"></span>単位系</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=edit&section=4" title="節を編集: 単位系"><span>編集</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>1 <a href="/wiki/%E6%97%A5" title="日">日</a>は 24 <a href="/wiki/%E6%99%82%E9%96%93_(%E5%8D%98%E4%BD%8D)" title="時間 (単位)">時間</a>である。また、<a href="/wiki/%E9%87%91" title="金">金</a>の含有率を示す<a href="/wiki/%E3%82%AB%E3%83%A9%E3%83%83%E3%83%88" title="カラット">カラット</a>は 24 分率である。 </p><p><a href="/wiki/%E7%A7%A6" title="秦">秦</a>の<a href="/wiki/%E8%B3%AA%E9%87%8F" title="質量">質量</a>の単位では 1 兩が 24 銖だった<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>。 </p> <div class="mw-heading mw-heading2"><h2 id="関連項目"><span id=".E9.96.A2.E9.80.A3.E9.A0.85.E7.9B.AE"></span>関連項目</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=edit&section=5" title="節を編集: 関連項目"><span>編集</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/%E4%BA%8C%E9%80%B2%E6%B3%95" title="二進法">二進法</a></li> <li><a href="/wiki/%E4%B8%89%E9%80%B2%E6%B3%95" title="三進法">三進法</a></li> <li><a href="/wiki/%E5%9B%9B%E9%80%B2%E6%B3%95" title="四進法">四進法</a></li> <li><a href="/wiki/%E5%85%AD%E9%80%B2%E6%B3%95" title="六進法">六進法</a></li> <li><a href="/wiki/%E5%85%AB%E9%80%B2%E6%B3%95" title="八進法">八進法</a></li> <li><a href="/wiki/%E5%8D%81%E4%BA%8C%E9%80%B2%E6%B3%95" title="十二進法">十二進法</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="参考文献"><span id=".E5.8F.82.E8.80.83.E6.96.87.E7.8C.AE"></span>参考文献</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95&action=edit&section=6" title="節を編集: 参考文献"><span>編集</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist" style="list-style-type: decimal;"> <ol class="references"> <li id="cite_note-1"><b><a href="#cite_ref-1">^</a></b> <span class="reference-text"><cite style="font-style:normal" class="citation" id="CITEREFGordon2005">Gordon, Raymond G., Jr., ed. (2005), <a rel="nofollow" class="external text" href="http://www.ethnologue.com/show_language.asp?code=ubu">“Umbu-Ungu”</a>, <i>Ethnologue: Languages of the World</i> (15 ed.)<span style="display:none;">, <a rel="nofollow" class="external free" href="http://www.ethnologue.com/show_language.asp?code=ubu">http://www.ethnologue.com/show_language.asp?code=ubu</a></span> <span class="reference-accessdate"><span title="">2008年3月16日</span>閲覧。</span></cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.btitle=Umbu-Ungu&rft.atitle=Ethnologue%3A+Languages+of+the+World&rft.date=2005&rft.edition=15&rft_id=http%3A%2F%2Fwww.ethnologue.com%2Fshow_language.asp%3Fcode%3Dubu&rfr_id=info:sid/ja.wikipedia.org:%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-2"><b><a href="#cite_ref-2">^</a></b> <span class="reference-text"><cite style="font-style:normal" class="citation" id="CITEREFBowersLepi1975">Bowers, Nancy; Lepi, Pundia (1975), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110604091351/http://www.ethnomath.org/resources/bowers-lepi1975.pdf">“Kaugel Valley systems of reckoning”</a>, <i>Journal of the Polynesian Society</i> <b>84</b> (3): 309-324,  <a rel="nofollow" class="external text" href="http://www.ethnomath.org/resources/bowers-lepi1975.pdf">オリジナル</a>の2011年6月4日時点におけるアーカイブ。<span style="display:none;">, <a rel="nofollow" class="external free" href="https://web.archive.org/web/20110604091351/http://www.ethnomath.org/resources/bowers-lepi1975.pdf">https://web.archive.org/web/20110604091351/http://www.ethnomath.org/resources/bowers-lepi1975.pdf</a></span></cite><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Kaugel+Valley+systems+of+reckoning&rft.jtitle=Journal+of+the+Polynesian+Society&rft.aulast=Bowers&rft.aufirst=Nancy&rft.au=Bowers%2C%26%2332%3BNancy&rft.au=Lepi%2C%26%2332%3BPundia&rft.date=1975&rft.volume=84&rft.issue=3&rft.pages=309-324&rft_id=https%3A%2F%2Fweb.archive.org%2Fweb%2F20110604091351%2Fhttp%3A%2F%2Fwww.ethnomath.org%2Fresources%2Fbowers-lepi1975.pdf&rfr_id=info:sid/ja.wikipedia.org:%E4%BA%8C%E5%8D%81%E5%9B%9B%E9%80%B2%E6%B3%95"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-3"><b><a href="#cite_ref-3">^</a></b> <span class="reference-text"><a href="https://en.wikisource.org/wiki/zh:%E6%BC%A2%E6%9B%B8/%E5%8D%B7021" class="extiw" title="wikisource:zh:漢書/卷021">wikisource:zh:漢書/卷021</a>: 二十四銖為兩。十六兩為斤。三十斤為鈞。四鈞為石。</span> </li> </ol></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&useformat=desktop" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">「<a dir="ltr" href="https://ja.wikipedia.org/w/index.php?title=二十四進法&oldid=88182534">https://ja.wikipedia.org/w/index.php?title=二十四進法&oldid=88182534</a>」から取得</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/%E7%89%B9%E5%88%A5:%E3%82%AB%E3%83%86%E3%82%B4%E3%83%AA" title="特別:カテゴリ">カテゴリ</a>: <ul><li><a href="/wiki/Category:%E6%95%B0%E3%81%AE%E8%A1%A8%E7%8F%BE" title="Category:数の表現">数の表現</a></li><li><a href="/wiki/Category:%E6%95%B0%E5%AD%A6%E3%81%AB%E9%96%A2%E3%81%99%E3%82%8B%E8%A8%98%E4%BA%8B" title="Category:数学に関する記事">数学に関する記事</a></li><li><a href="/wiki/Category:%E4%BD%8D%E5%8F%96%E3%82%8A%E8%A8%98%E6%95%B0%E6%B3%95" title="Category:位取り記数法">位取り記数法</a></li></ul></div></div> </div> 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