21100740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1$

素因数の和:317

約数の個数: 96

約数和(自身を含む): 63431424

約数和(自身を除く): 42330684

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 137, 151, 170, 204, 255, 274, 302, 340, 411, 453, 510, 548, 604, 685, 755, 822, 906, 1020, 1370, 1510, 1644, 1812, 2055, 2265, 2329, 2567, 2740, 3020, 4110, 4530, 4658, 5134, 6987, 7701, 8220, 9060, 9316, 10268, 11645, 12835, 13974, 15402, 20687, 23290, 25670, 27948, 30804, 34935, 38505, 41374, 46580, 51340, 62061, 69870, 77010, 82748, 103435, 124122, 139740, 154020, 206870, 248244, 310305, 351679, 413740, 620610, 703358, 1055037, 1241220, 1406716, 1758395, 2110074, 3516790, 4220148, 5275185, 7033580, 10550370, 21100740]

約数ペア:

[(1, 21100740), (2, 10550370), (3, 7033580), (4, 5275185), (5, 4220148), (6, 3516790), (10, 2110074), (12, 1758395), (15, 1406716), (17, 1241220), (20, 1055037), (30, 703358), (34, 620610), (51, 413740), (60, 351679), (68, 310305), (85, 248244), (102, 206870), (137, 154020), (151, 139740), (170, 124122), (204, 103435), (255, 82748), (274, 77010), (302, 69870), (340, 62061), (411, 51340), (453, 46580), (510, 41374), (548, 38505), (604, 34935), (685, 30804), (755, 27948), (822, 25670), (906, 23290), (1020, 20687), (1370, 15402), (1510, 13974), (1644, 12835), (1812, 11645), (2055, 10268), (2265, 9316), (2329, 9060), (2567, 8220), (2740, 7701), (3020, 6987), (4110, 5134), (4530, 4658)]