21438560

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{937}}^1$

素因数の和:976

約数の個数: 96

約数和(自身を含む): 59566752

約数和(自身を除く): 38128192

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 352, 416, 440, 520, 572, 715, 880, 937, 1040, 1144, 1430, 1760, 1874, 2080, 2288, 2860, 3748, 4576, 4685, 5720, 7496, 9370, 10307, 11440, 12181, 14992, 18740, 20614, 22880, 24362, 29984, 37480, 41228, 48724, 51535, 60905, 74960, 82456, 97448, 103070, 121810, 133991, 149920, 164912, 194896, 206140, 243620, 267982, 329824, 389792, 412280, 487240, 535964, 669955, 824560, 974480, 1071928, 1339910, 1649120, 1948960, 2143856, 2679820, 4287712, 5359640, 10719280, 21438560]

約数ペア:

[(1, 21438560), (2, 10719280), (4, 5359640), (5, 4287712), (8, 2679820), (10, 2143856), (11, 1948960), (13, 1649120), (16, 1339910), (20, 1071928), (22, 974480), (26, 824560), (32, 669955), (40, 535964), (44, 487240), (52, 412280), (55, 389792), (65, 329824), (80, 267982), (88, 243620), (104, 206140), (110, 194896), (130, 164912), (143, 149920), (160, 133991), (176, 121810), (208, 103070), (220, 97448), (260, 82456), (286, 74960), (352, 60905), (416, 51535), (440, 48724), (520, 41228), (572, 37480), (715, 29984), (880, 24362), (937, 22880), (1040, 20614), (1144, 18740), (1430, 14992), (1760, 12181), (1874, 11440), (2080, 10307), (2288, 9370), (2860, 7496), (3748, 5720), (4576, 4685)]