218777620

素因数分解:

$2^2\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{9689}}^1$

素因数の和:10827

約数の個数: 24

約数和(自身を含む): 459887400

約数和(自身を除く): 241109780

約数列:

[1, 2, 4, 5, 10, 20, 1129, 2258, 4516, 5645, 9689, 11290, 19378, 22580, 38756, 48445, 96890, 193780, 10938881, 21877762, 43755524, 54694405, 109388810, 218777620]

約数ペア:

[(1, 218777620), (2, 109388810), (4, 54694405), (5, 43755524), (10, 21877762), (20, 10938881), (1129, 193780), (2258, 96890), (4516, 48445), (5645, 38756), (9689, 22580), (11290, 19378)]