8641820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3571}}^1$

素因数の和:3602

約数の個数: 36

約数和(自身を含む): 19953192

約数和(自身を除く): 11311372

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 3571, 7142, 14284, 17855, 35710, 39281, 71420, 78562, 157124, 196405, 392810, 432091, 785620, 864182, 1728364, 2160455, 4320910, 8641820]

約数ペア:

[(1, 8641820), (2, 4320910), (4, 2160455), (5, 1728364), (10, 864182), (11, 785620), (20, 432091), (22, 392810), (44, 196405), (55, 157124), (110, 78562), (121, 71420), (220, 39281), (242, 35710), (484, 17855), (605, 14284), (1210, 7142), (2420, 3571)]