51804080

素因数分解:

$2^4\times 5^1\times {\mathrm{647551}}^1$

素因数の和:647564

約数の個数: 20

約数和(自身を含む): 120444672

約数和(自身を除く): 68640592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 647551, 1295102, 2590204, 3237755, 5180408, 6475510, 10360816, 12951020, 25902040, 51804080]

約数ペア:

[(1, 51804080), (2, 25902040), (4, 12951020), (5, 10360816), (8, 6475510), (10, 5180408), (16, 3237755), (20, 2590204), (40, 1295102), (80, 647551)]