21556860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{953}}^1$

素因数の和:1007

約数の個数: 96

約数和(自身を含む): 67314240

約数和(自身を除く): 45757380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 29, 30, 39, 52, 58, 60, 65, 78, 87, 116, 130, 145, 156, 174, 195, 260, 290, 348, 377, 390, 435, 580, 754, 780, 870, 953, 1131, 1508, 1740, 1885, 1906, 2262, 2859, 3770, 3812, 4524, 4765, 5655, 5718, 7540, 9530, 11310, 11436, 12389, 14295, 19060, 22620, 24778, 27637, 28590, 37167, 49556, 55274, 57180, 61945, 74334, 82911, 110548, 123890, 138185, 148668, 165822, 185835, 247780, 276370, 331644, 359281, 371670, 414555, 552740, 718562, 743340, 829110, 1077843, 1437124, 1658220, 1796405, 2155686, 3592810, 4311372, 5389215, 7185620, 10778430, 21556860]

約数ペア:

[(1, 21556860), (2, 10778430), (3, 7185620), (4, 5389215), (5, 4311372), (6, 3592810), (10, 2155686), (12, 1796405), (13, 1658220), (15, 1437124), (20, 1077843), (26, 829110), (29, 743340), (30, 718562), (39, 552740), (52, 414555), (58, 371670), (60, 359281), (65, 331644), (78, 276370), (87, 247780), (116, 185835), (130, 165822), (145, 148668), (156, 138185), (174, 123890), (195, 110548), (260, 82911), (290, 74334), (348, 61945), (377, 57180), (390, 55274), (435, 49556), (580, 37167), (754, 28590), (780, 27637), (870, 24778), (953, 22620), (1131, 19060), (1508, 14295), (1740, 12389), (1885, 11436), (1906, 11310), (2262, 9530), (2859, 7540), (3770, 5718), (3812, 5655), (4524, 4765)]