20395825

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 26784000

約数和(自身を除く): 6388175

約数列:

[1, 5, 23, 25, 79, 115, 395, 449, 575, 1817, 1975, 2245, 9085, 10327, 11225, 35471, 45425, 51635, 177355, 258175, 815833, 886775, 4079165, 20395825]

約数ペア:

[(1, 20395825), (5, 4079165), (23, 886775), (25, 815833), (79, 258175), (115, 177355), (395, 51635), (449, 45425), (575, 35471), (1817, 11225), (1975, 10327), (2245, 9085)]