18640432

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{68531}}^1$

素因数の和:68556

約数の個数: 20

約数和(自身を含む): 38240856

約数和(自身を除く): 19600424

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 68531, 137062, 274124, 548248, 1096496, 1165027, 2330054, 4660108, 9320216, 18640432]

約数ペア:

[(1, 18640432), (2, 9320216), (4, 4660108), (8, 2330054), (16, 1165027), (17, 1096496), (34, 548248), (68, 274124), (136, 137062), (272, 68531)]