256124080

素因数分解:

$2^4\times 5^1\times {\mathrm{3201551}}^1$

素因数の和:3201564

約数の個数: 20

約数和(自身を含む): 595488672

約数和(自身を除く): 339364592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3201551, 6403102, 12806204, 16007755, 25612408, 32015510, 51224816, 64031020, 128062040, 256124080]

約数ペア:

[(1, 256124080), (2, 128062040), (4, 64031020), (5, 51224816), (8, 32015510), (10, 25612408), (16, 16007755), (20, 12806204), (40, 6403102), (80, 3201551)]