161722240

素因数分解:

$2^7\times 5^1\times {\mathrm{252691}}^1$

素因数の和:252710

約数の個数: 32

約数和(自身を含む): 386618760

約数和(自身を除く): 224896520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 252691, 505382, 1010764, 1263455, 2021528, 2526910, 4043056, 5053820, 8086112, 10107640, 16172224, 20215280, 32344448, 40430560, 80861120, 161722240]

約数ペア:

[(1, 161722240), (2, 80861120), (4, 40430560), (5, 32344448), (8, 20215280), (10, 16172224), (16, 10107640), (20, 8086112), (32, 5053820), (40, 4043056), (64, 2526910), (80, 2021528), (128, 1263455), (160, 1010764), (320, 505382), (640, 252691)]