1到100的因數如下:1: 12: 1,23: 1,34: 1,2,45: 1,56: 1,2,3,67: 1,78: 1,2,4,89: 1,3,910: 1,2,5,1011: 1,1112: 1,2,3,4,6,1213: 1,1314: 1,2,7,1415: 1,3,5,1516: 1,2,4,8,1617: 1,1718: 1,2,3,6,9,1819: 1,1920: 1,2,4,5,10,2021: 1,3,7,2122: 1,2,11,2223: 1,2324: 1,2,3,4,6,8,12,2425: 1,5,2526: 1,2,13,2627: 1,3,9,2728: 1,2,4,7,14,2829: 1,2930: 1,2,3,5,6,10,15,3031: 1,3132: 1,2,4,8,16,3233: 1,3,11,3334: 1,2,17,3435: 1,5,7,3536: 1,2,3,4,6,9,12,18,36 37: 1,3738: 1,2,19,3839: 1,3,13,3940: 1,2,4,5,8,10,20,4041: 1,4142: 1,2,3,6,7,14,21,4243: 1,4344: 1,2,4,11,22,4445: 1,3,5,9,15,4546: 1,2,23,4647: 1,4748: 1,2,3,4,6,8,12,16,24,48 49: 1,7,491,49,750: 1,2,5,10,25,5051: 1,3,17,5152: 1,2,4,13,26,5253: 1,5354: 1,2,3,6,9,18,27,5455: 1,5,11,5556: 1,2,4,7,8,14,28,5657: 1,3,19,5758: 1,2,29,5859: 1,5960: 1,2,3,4,5,6,10,12,15,20,30,6061: 1,6162: 1,2,31,6263: 1,3,7,9,21,6364: 1,2,4,8,16,32,6465: 1,5,13,6566: 1,2,3,6,11,22,33,6667: 1,6768: 1,2,4,17,34,6869: 1,3,23,6970: 1,2,5,7,10,14,35,7071: 1,7172: 1,2,3,4,6,8,9,12,18,24,36,72 73: 1,73:1,7374: 1,2,37,7475: 1,3,5,15,25,7576: 1,2,4,19,38,7677: 1,7,11,7778: 1,2,3,6,13,26,39,7879: 1,7980: 1,2,4,5,8,10,16,20,40,80 81: 1,3,9,27,8182: 1,2,41,8283: 1,8384: 1,2,3,4,6,7,12,14,21,28,42,84 85: 1,5,17,8586: 1,2,43,8687: 1,3,29,8788: 1,2,4,8,11,22,44,8889: 1,8990: 1,2,3,5,6,9,10,15,18,30,45,9091: 1,7,13,9192: 1,2,4,23,46,9293: 1,3,31,9394: 1,2,47,9495: 1,5,19,9596: 1,2,3,4,6,8,12,16,24,32,48,96 97: 1,97:1, 9798: 1,2,7,14,49,9899: 1,3,9,11,33,99100: 1,2,4,5,10,20,25,50,100在小學數學裡,兩個正整數相乘,那麼這兩個數都叫做積的因數,或稱為約數。小學數學定義:假如a*b=c(a、b、c都是整數),那麼我們稱a和b就是c的因數。需要注意的是,唯有被除數,除數,商皆為整數,餘數為零時,此關係才成立。 反過來說,我們稱c為a、b的倍數。在研究因數和倍數時,小學數學不考慮0。擴充套件資料事實上因數一般定義在整數上:設A為整數,B為非零整數,若存在整數Q,使得A=QB,則稱B是A的因數,記作B|A。但是也有的作者不要求B≠0。例如:2X6=12,2和6的積是12,因此2和6是12的因數。12是2的倍數,也是6的倍數。3X(-9)=-27,3和-9都是-27的因數。-27是3和-9的倍數。一般而言,整數A乘以整數B得到整數C,整數A與整數B都稱做整數C的因數,反之,整數C為整數A的倍數,也為整數B的倍數。
1到100的因數如下:1: 12: 1,23: 1,34: 1,2,45: 1,56: 1,2,3,67: 1,78: 1,2,4,89: 1,3,910: 1,2,5,1011: 1,1112: 1,2,3,4,6,1213: 1,1314: 1,2,7,1415: 1,3,5,1516: 1,2,4,8,1617: 1,1718: 1,2,3,6,9,1819: 1,1920: 1,2,4,5,10,2021: 1,3,7,2122: 1,2,11,2223: 1,2324: 1,2,3,4,6,8,12,2425: 1,5,2526: 1,2,13,2627: 1,3,9,2728: 1,2,4,7,14,2829: 1,2930: 1,2,3,5,6,10,15,3031: 1,3132: 1,2,4,8,16,3233: 1,3,11,3334: 1,2,17,3435: 1,5,7,3536: 1,2,3,4,6,9,12,18,36 37: 1,3738: 1,2,19,3839: 1,3,13,3940: 1,2,4,5,8,10,20,4041: 1,4142: 1,2,3,6,7,14,21,4243: 1,4344: 1,2,4,11,22,4445: 1,3,5,9,15,4546: 1,2,23,4647: 1,4748: 1,2,3,4,6,8,12,16,24,48 49: 1,7,491,49,750: 1,2,5,10,25,5051: 1,3,17,5152: 1,2,4,13,26,5253: 1,5354: 1,2,3,6,9,18,27,5455: 1,5,11,5556: 1,2,4,7,8,14,28,5657: 1,3,19,5758: 1,2,29,5859: 1,5960: 1,2,3,4,5,6,10,12,15,20,30,6061: 1,6162: 1,2,31,6263: 1,3,7,9,21,6364: 1,2,4,8,16,32,6465: 1,5,13,6566: 1,2,3,6,11,22,33,6667: 1,6768: 1,2,4,17,34,6869: 1,3,23,6970: 1,2,5,7,10,14,35,7071: 1,7172: 1,2,3,4,6,8,9,12,18,24,36,72 73: 1,73:1,7374: 1,2,37,7475: 1,3,5,15,25,7576: 1,2,4,19,38,7677: 1,7,11,7778: 1,2,3,6,13,26,39,7879: 1,7980: 1,2,4,5,8,10,16,20,40,80 81: 1,3,9,27,8182: 1,2,41,8283: 1,8384: 1,2,3,4,6,7,12,14,21,28,42,84 85: 1,5,17,8586: 1,2,43,8687: 1,3,29,8788: 1,2,4,8,11,22,44,8889: 1,8990: 1,2,3,5,6,9,10,15,18,30,45,9091: 1,7,13,9192: 1,2,4,23,46,9293: 1,3,31,9394: 1,2,47,9495: 1,5,19,9596: 1,2,3,4,6,8,12,16,24,32,48,96 97: 1,97:1, 9798: 1,2,7,14,49,9899: 1,3,9,11,33,99100: 1,2,4,5,10,20,25,50,100在小學數學裡,兩個正整數相乘,那麼這兩個數都叫做積的因數,或稱為約數。小學數學定義:假如a*b=c(a、b、c都是整數),那麼我們稱a和b就是c的因數。需要注意的是,唯有被除數,除數,商皆為整數,餘數為零時,此關係才成立。 反過來說,我們稱c為a、b的倍數。在研究因數和倍數時,小學數學不考慮0。擴充套件資料事實上因數一般定義在整數上:設A為整數,B為非零整數,若存在整數Q,使得A=QB,則稱B是A的因數,記作B|A。但是也有的作者不要求B≠0。例如:2X6=12,2和6的積是12,因此2和6是12的因數。12是2的倍數,也是6的倍數。3X(-9)=-27,3和-9都是-27的因數。-27是3和-9的倍數。一般而言,整數A乘以整數B得到整數C,整數A與整數B都稱做整數C的因數,反之,整數C為整數A的倍數,也為整數B的倍數。