51607280

素因数分解:

$2^4\times 5^1\times {\mathrm{645091}}^1$

素因数の和:645104

約数の個数: 20

約数和(自身を含む): 119987112

約数和(自身を除く): 68379832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 645091, 1290182, 2580364, 3225455, 5160728, 6450910, 10321456, 12901820, 25803640, 51607280]

約数ペア:

[(1, 51607280), (2, 25803640), (4, 12901820), (5, 10321456), (8, 6450910), (10, 5160728), (16, 3225455), (20, 2580364), (40, 1290182), (80, 645091)]