77817640

素因数分解:

$2^3\times 5^1\times {\mathrm{421}}^1\times {\mathrm{4621}}^1$

素因数の和:5053

約数の個数: 32

約数和(自身を含む): 175543560

約数和(自身を除く): 97725920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421, 842, 1684, 2105, 3368, 4210, 4621, 8420, 9242, 16840, 18484, 23105, 36968, 46210, 92420, 184840, 1945441, 3890882, 7781764, 9727205, 15563528, 19454410, 38908820, 77817640]

約数ペア:

[(1, 77817640), (2, 38908820), (4, 19454410), (5, 15563528), (8, 9727205), (10, 7781764), (20, 3890882), (40, 1945441), (421, 184840), (842, 92420), (1684, 46210), (2105, 36968), (3368, 23105), (4210, 18484), (4621, 16840), (8420, 9242)]