21559645

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{419}}^1$

素因数の和:716

約数の個数: 16

約数和(自身を含む): 26671680

約数和(自身を除く): 5112035

約数列:

[1, 5, 41, 205, 251, 419, 1255, 2095, 10291, 17179, 51455, 85895, 105169, 525845, 4311929, 21559645]

約数ペア:

[(1, 21559645), (5, 4311929), (41, 525845), (205, 105169), (251, 85895), (419, 51455), (1255, 17179), (2095, 10291)]