128425240

素因数分解:

$2^3\times 5^1\times {\mathrm{3210631}}^1$

素因数の和:3210642

約数の個数: 16

約数和(自身を含む): 288956880

約数和(自身を除く): 160531640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3210631, 6421262, 12842524, 16053155, 25685048, 32106310, 64212620, 128425240]

約数ペア:

[(1, 128425240), (2, 64212620), (4, 32106310), (5, 25685048), (8, 16053155), (10, 12842524), (20, 6421262), (40, 3210631)]