21044970

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:460

約数の個数: 96

約数和(自身を含む): 59604480

約数和(自身を除く): 38559510

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 30, 31, 38, 45, 57, 62, 90, 93, 95, 114, 155, 171, 186, 190, 279, 285, 310, 342, 397, 465, 558, 570, 589, 794, 855, 930, 1178, 1191, 1395, 1710, 1767, 1985, 2382, 2790, 2945, 3534, 3573, 3970, 5301, 5890, 5955, 7146, 7543, 8835, 10602, 11910, 12307, 15086, 17670, 17865, 22629, 24614, 26505, 35730, 36921, 37715, 45258, 53010, 61535, 67887, 73842, 75430, 110763, 113145, 123070, 135774, 184605, 221526, 226290, 233833, 339435, 369210, 467666, 553815, 678870, 701499, 1107630, 1169165, 1402998, 2104497, 2338330, 3507495, 4208994, 7014990, 10522485, 21044970]

約数ペア:

[(1, 21044970), (2, 10522485), (3, 7014990), (5, 4208994), (6, 3507495), (9, 2338330), (10, 2104497), (15, 1402998), (18, 1169165), (19, 1107630), (30, 701499), (31, 678870), (38, 553815), (45, 467666), (57, 369210), (62, 339435), (90, 233833), (93, 226290), (95, 221526), (114, 184605), (155, 135774), (171, 123070), (186, 113145), (190, 110763), (279, 75430), (285, 73842), (310, 67887), (342, 61535), (397, 53010), (465, 45258), (558, 37715), (570, 36921), (589, 35730), (794, 26505), (855, 24614), (930, 22629), (1178, 17865), (1191, 17670), (1395, 15086), (1710, 12307), (1767, 11910), (1985, 10602), (2382, 8835), (2790, 7543), (2945, 7146), (3534, 5955), (3573, 5890), (3970, 5301)]