22






Disambig gray.svg  「二十二」重定向至此。關於名为“二十二”的慰安妇主题纪录片，詳見「二十二 (2017年电影)」。




































数表 — 整数


<<
20
21
22
23
24
25
26
27
28
29
>>



小写 二十二
大写 貳拾貳
质因数分解
2×11{displaystyle 2times 11}{displaystyle 2times 11}
罗马数字 XXII
二进制 10110
八进制 26
十二进制 1A
十六进制 16

22是21与23之间的自然数。




目录






  • 1 数学性质


  • 2 在科学中


  • 3 在其它领域中


  • 4 参考文献





数学性质



  • 第13個合數，正因數有1、2、11和22。前一個為21、下一個為24。

    質因數分解為2×11{displaystyle 2times 11}{displaystyle 2times 11}。


  • 第18個虧數，真因數和為14，虧度為8。前一個為21、下一個為23。

  • 第15個不尋常數，大於平方根的質因數為11。前一個為21、下一個為23。

  • 第8個半質數。前一個為21、下一個為25。

  • 第15個無平方數因數的數。前一個為21、下一個為23。

  • 第8個十进制的奢侈數。前一個為20、下一個為24。

  • 第2個十进制的史密夫數。前一個為4、下一個為27。

  • 迴文數


  • 五邊形數、中心七邊形數

  • 22的階乘有22個位數



在科学中




  • 鈦的原子序數[1]


  • SSH的默认端口号

  • 引号（在URL中显示为%22）



在其它领域中




  • V-22魚鷹式傾斜旋翼機，可傾斜旋翼機的代表作品。


  • F-22猛禽戰鬥機，洛克希德馬丁所開發匿蹤戰鬥機。


  • 22型护卫舰，英国皇家海军建造的一级巡防舰。


  • 022型导弹艇，中国人民解放军的新型导弹快艇。


  • 中国铁路22型客车，中国铁路第二代主型铁路客车。


  • 22 (歌曲)，英國女歌手莉莉·艾倫在2009年發佈的一支單曲。


  • 22 (歌曲)，美國女歌手泰勒·斯威夫特在2012年發佈的一支單曲。


  • 二十二 (2017年电影)，2017年上映描写在华慰安妇生活现状的纪录片。



参考文献





  1. ^ Royal Society of Chemistry - Visual Element Periodic Table









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