87161020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{61381}}^1$

素因数の和:61461

約数の個数: 24

約数和(自身を含む): 185619168

約数和(自身を除く): 98458148

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 61381, 122762, 245524, 306905, 613810, 1227620, 4358051, 8716102, 17432204, 21790255, 43580510, 87161020]

約数ペア:

[(1, 87161020), (2, 43580510), (4, 21790255), (5, 17432204), (10, 8716102), (20, 4358051), (71, 1227620), (142, 613810), (284, 306905), (355, 245524), (710, 122762), (1420, 61381)]