128422040

素因数分解:

$2^3\times 5^1\times {\mathrm{3210551}}^1$

素因数の和:3210562

約数の個数: 16

約数和(自身を含む): 288949680

約数和(自身を除く): 160527640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3210551, 6421102, 12842204, 16052755, 25684408, 32105510, 64211020, 128422040]

約数ペア:

[(1, 128422040), (2, 64211020), (4, 32105510), (5, 25684408), (8, 16052755), (10, 12842204), (20, 6421102), (40, 3210551)]