64455640

素因数分解:

$2^3\times 5^1\times {\mathrm{1611391}}^1$

素因数の和:1611402

約数の個数: 16

約数和(自身を含む): 145025280

約数和(自身を除く): 80569640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1611391, 3222782, 6445564, 8056955, 12891128, 16113910, 32227820, 64455640]

約数ペア:

[(1, 64455640), (2, 32227820), (4, 16113910), (5, 12891128), (8, 8056955), (10, 6445564), (20, 3222782), (40, 1611391)]