21809865

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{821}}^1$

素因数の和:870

約数の個数: 64

約数和(自身を含む): 45453312

約数和(自身を除く): 23643447

約数列:

[1, 3, 5, 7, 11, 15, 21, 23, 33, 35, 55, 69, 77, 105, 115, 161, 165, 231, 253, 345, 385, 483, 759, 805, 821, 1155, 1265, 1771, 2415, 2463, 3795, 4105, 5313, 5747, 8855, 9031, 12315, 17241, 18883, 26565, 27093, 28735, 45155, 56649, 63217, 86205, 94415, 132181, 135465, 189651, 207713, 283245, 316085, 396543, 623139, 660905, 948255, 1038565, 1453991, 1982715, 3115695, 4361973, 7269955, 21809865]

約数ペア:

[(1, 21809865), (3, 7269955), (5, 4361973), (7, 3115695), (11, 1982715), (15, 1453991), (21, 1038565), (23, 948255), (33, 660905), (35, 623139), (55, 396543), (69, 316085), (77, 283245), (105, 207713), (115, 189651), (161, 135465), (165, 132181), (231, 94415), (253, 86205), (345, 63217), (385, 56649), (483, 45155), (759, 28735), (805, 27093), (821, 26565), (1155, 18883), (1265, 17241), (1771, 12315), (2415, 9031), (2463, 8855), (3795, 5747), (4105, 5313)]