20801291390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{343199}}^1$

素因数の和:343265

約数の個数: 64

約数和(自身を含む): 44478720000

約数和(自身を除く): 23677428610

約数列:

[1, 2, 5, 10, 11, 19, 22, 29, 38, 55, 58, 95, 110, 145, 190, 209, 290, 319, 418, 551, 638, 1045, 1102, 1595, 2090, 2755, 3190, 5510, 6061, 12122, 30305, 60610, 343199, 686398, 1715995, 3431990, 3775189, 6520781, 7550378, 9952771, 13041562, 18875945, 19905542, 32603905, 37751890, 49763855, 65207810, 71728591, 99527710, 109480481, 143457182, 189102649, 218960962, 358642955, 378205298, 547402405, 717285910, 945513245, 1094804810, 1891026490, 2080129139, 4160258278, 10400645695, 20801291390]

約数ペア:

[(1, 20801291390), (2, 10400645695), (5, 4160258278), (10, 2080129139), (11, 1891026490), (19, 1094804810), (22, 945513245), (29, 717285910), (38, 547402405), (55, 378205298), (58, 358642955), (95, 218960962), (110, 189102649), (145, 143457182), (190, 109480481), (209, 99527710), (290, 71728591), (319, 65207810), (418, 49763855), (551, 37751890), (638, 32603905), (1045, 19905542), (1102, 18875945), (1595, 13041562), (2090, 9952771), (2755, 7550378), (3190, 6520781), (5510, 3775189), (6061, 3431990), (12122, 1715995), (30305, 686398), (60610, 343199)]