2815640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{1637}}^1$

素因数の和:1691

約数の個数: 32

約数和(自身を含む): 6486480

約数和(自身を除く): 3670840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1637, 1720, 3274, 6548, 8185, 13096, 16370, 32740, 65480, 70391, 140782, 281564, 351955, 563128, 703910, 1407820, 2815640]

約数ペア:

[(1, 2815640), (2, 1407820), (4, 703910), (5, 563128), (8, 351955), (10, 281564), (20, 140782), (40, 70391), (43, 65480), (86, 32740), (172, 16370), (215, 13096), (344, 8185), (430, 6548), (860, 3274), (1637, 1720)]