51159280

素因数分解:

$2^4\times 5^1\times {\mathrm{639491}}^1$

素因数の和:639504

約数の個数: 20

約数和(自身を含む): 118945512

約数和(自身を除く): 67786232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 639491, 1278982, 2557964, 3197455, 5115928, 6394910, 10231856, 12789820, 25579640, 51159280]

約数ペア:

[(1, 51159280), (2, 25579640), (4, 12789820), (5, 10231856), (8, 6394910), (10, 5115928), (16, 3197455), (20, 2557964), (40, 1278982), (80, 639491)]