80991620

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{35837}}^1$

素因数の和:35959

約数の個数: 24

約数和(自身を含む): 171592344

約数和(自身を除く): 90600724

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 35837, 71674, 143348, 179185, 358370, 716740, 4049581, 8099162, 16198324, 20247905, 40495810, 80991620]

約数ペア:

[(1, 80991620), (2, 40495810), (4, 20247905), (5, 16198324), (10, 8099162), (20, 4049581), (113, 716740), (226, 358370), (452, 179185), (565, 143348), (1130, 71674), (2260, 35837)]