201921820

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{67759}}^1$

素因数の和:67917

約数の個数: 24

約数和(自身を含む): 426888000

約数和(自身を除く): 224966180

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 67759, 135518, 271036, 338795, 677590, 1355180, 10096091, 20192182, 40384364, 50480455, 100960910, 201921820]

約数ペア:

[(1, 201921820), (2, 100960910), (4, 50480455), (5, 40384364), (10, 20192182), (20, 10096091), (149, 1355180), (298, 677590), (596, 338795), (745, 271036), (1490, 135518), (2980, 67759)]