21585520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1291}}^1$

素因数の和:1334

約数の個数: 80

約数和(自身を含む): 57674880

約数和(自身を除く): 36089360

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1291, 1520, 1672, 2090, 2582, 3344, 4180, 5164, 6455, 8360, 10328, 12910, 14201, 16720, 20656, 24529, 25820, 28402, 49058, 51640, 56804, 71005, 98116, 103280, 113608, 122645, 142010, 196232, 227216, 245290, 269819, 284020, 392464, 490580, 539638, 568040, 981160, 1079276, 1136080, 1349095, 1962320, 2158552, 2698190, 4317104, 5396380, 10792760, 21585520]

約数ペア:

[(1, 21585520), (2, 10792760), (4, 5396380), (5, 4317104), (8, 2698190), (10, 2158552), (11, 1962320), (16, 1349095), (19, 1136080), (20, 1079276), (22, 981160), (38, 568040), (40, 539638), (44, 490580), (55, 392464), (76, 284020), (80, 269819), (88, 245290), (95, 227216), (110, 196232), (152, 142010), (176, 122645), (190, 113608), (209, 103280), (220, 98116), (304, 71005), (380, 56804), (418, 51640), (440, 49058), (760, 28402), (836, 25820), (880, 24529), (1045, 20656), (1291, 16720), (1520, 14201), (1672, 12910), (2090, 10328), (2582, 8360), (3344, 6455), (4180, 5164)]