87620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1$

素因数の和:359

約数の個数: 24

約数和(自身を含む): 198744

約数和(自身を除く): 111124

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 337, 674, 1348, 1685, 3370, 4381, 6740, 8762, 17524, 21905, 43810, 87620]

約数ペア:

[(1, 87620), (2, 43810), (4, 21905), (5, 17524), (10, 8762), (13, 6740), (20, 4381), (26, 3370), (52, 1685), (65, 1348), (130, 674), (260, 337)]