81237620

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{86423}}^1$

素因数の和:86479

約数の個数: 24

約数和(自身を含む): 174230784

約数和(自身を除く): 92993164

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 86423, 172846, 345692, 432115, 864230, 1728460, 4061881, 8123762, 16247524, 20309405, 40618810, 81237620]

約数ペア:

[(1, 81237620), (2, 40618810), (4, 20309405), (5, 16247524), (10, 8123762), (20, 4061881), (47, 1728460), (94, 864230), (188, 432115), (235, 345692), (470, 172846), (940, 86423)]