79555640

素因数分解:

$2^3\times 5^1\times {\mathrm{1988891}}^1$

素因数の和:1988902

約数の個数: 16

約数和(自身を含む): 179000280

約数和(自身を除く): 99444640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1988891, 3977782, 7955564, 9944455, 15911128, 19888910, 39777820, 79555640]

約数ペア:

[(1, 79555640), (2, 39777820), (4, 19888910), (5, 15911128), (8, 9944455), (10, 7955564), (20, 3977782), (40, 1988891)]