20806360

素因数分解:

$2^3\times 5^1\times {\mathrm{149}}^1\times {\mathrm{3491}}^1$

素因数の和:3651

約数の個数: 32

約数和(自身を含む): 47142000

約数和(自身を除く): 26335640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 149, 298, 596, 745, 1192, 1490, 2980, 3491, 5960, 6982, 13964, 17455, 27928, 34910, 69820, 139640, 520159, 1040318, 2080636, 2600795, 4161272, 5201590, 10403180, 20806360]

約数ペア:

[(1, 20806360), (2, 10403180), (4, 5201590), (5, 4161272), (8, 2600795), (10, 2080636), (20, 1040318), (40, 520159), (149, 139640), (298, 69820), (596, 34910), (745, 27928), (1192, 17455), (1490, 13964), (2980, 6982), (3491, 5960)]