80661620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{310237}}^1$

素因数の和:310259

約数の個数: 24

約数和(自身を含む): 182419944

約数和(自身を除く): 101758324

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 310237, 620474, 1240948, 1551185, 3102370, 4033081, 6204740, 8066162, 16132324, 20165405, 40330810, 80661620]

約数ペア:

[(1, 80661620), (2, 40330810), (4, 20165405), (5, 16132324), (10, 8066162), (13, 6204740), (20, 4033081), (26, 3102370), (52, 1551185), (65, 1240948), (130, 620474), (260, 310237)]