51161360

素因数分解:

$2^4\times 5^1\times {\mathrm{639517}}^1$

素因数の和:639530

約数の個数: 20

約数和(自身を含む): 118950348

約数和(自身を除く): 67788988

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 639517, 1279034, 2558068, 3197585, 5116136, 6395170, 10232272, 12790340, 25580680, 51161360]

約数ペア:

[(1, 51161360), (2, 25580680), (4, 12790340), (5, 10232272), (8, 6395170), (10, 5116136), (16, 3197585), (20, 2558068), (40, 1279034), (80, 639517)]