81659005

素因数分解:

$5^1\times {\mathrm{101}}^2\times {\mathrm{1601}}^1$

素因数の和:1808

約数の個数: 12

約数和(自身を含む): 99032436

約数和(自身を除く): 17373431

約数列:

[1, 5, 101, 505, 1601, 8005, 10201, 51005, 161701, 808505, 16331801, 81659005]

約数ペア:

[(1, 81659005), (5, 16331801), (101, 808505), (505, 161701), (1601, 51005), (8005, 10201)]