16518284080

素因数分解:

$2^4\times 5^1\times {\mathrm{206478551}}^1$

素因数の和:206478564

約数の個数: 20

約数和(自身を含む): 38405010672

約数和(自身を除く): 21886726592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 206478551, 412957102, 825914204, 1032392755, 1651828408, 2064785510, 3303656816, 4129571020, 8259142040, 16518284080]

約数ペア:

[(1, 16518284080), (2, 8259142040), (4, 4129571020), (5, 3303656816), (8, 2064785510), (10, 1651828408), (16, 1032392755), (20, 825914204), (40, 412957102), (80, 206478551)]