21986021920

素因数分解:

$2^5\times 5^1\times {\mathrm{137412637}}^1$

素因数の和:137412652

約数の個数: 24

約数和(自身を含む): 51941977164

約数和(自身を除く): 29955955244

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 137412637, 274825274, 549650548, 687063185, 1099301096, 1374126370, 2198602192, 2748252740, 4397204384, 5496505480, 10993010960, 21986021920]

約数ペア:

[(1, 21986021920), (2, 10993010960), (4, 5496505480), (5, 4397204384), (8, 2748252740), (10, 2198602192), (16, 1374126370), (20, 1099301096), (32, 687063185), (40, 549650548), (80, 274825274), (160, 137412637)]