4386820

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{521}}^1$

素因数の和:951

約数の個数: 24

約数和(自身を含む): 9251928

約数和(自身を除く): 4865108

約数列:

[1, 2, 4, 5, 10, 20, 421, 521, 842, 1042, 1684, 2084, 2105, 2605, 4210, 5210, 8420, 10420, 219341, 438682, 877364, 1096705, 2193410, 4386820]

約数ペア:

[(1, 4386820), (2, 2193410), (4, 1096705), (5, 877364), (10, 438682), (20, 219341), (421, 10420), (521, 8420), (842, 5210), (1042, 4210), (1684, 2605), (2084, 2105)]