128804540

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{43223}}^1$

素因数の和:43381

約数の個数: 24

約数和(自身を含む): 272311200

約数和(自身を除く): 143506660

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 43223, 86446, 172892, 216115, 432230, 864460, 6440227, 12880454, 25760908, 32201135, 64402270, 128804540]

約数ペア:

[(1, 128804540), (2, 64402270), (4, 32201135), (5, 25760908), (10, 12880454), (20, 6440227), (149, 864460), (298, 432230), (596, 216115), (745, 172892), (1490, 86446), (2980, 43223)]