204528025

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{48409}}^1$

素因数の和:48445

約数の個数: 18

約数和(自身を含む): 274629930

約数和(自身を除く): 70101905

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 48409, 242045, 629317, 1210225, 3146585, 8181121, 15732925, 40905605, 204528025]

約数ペア:

[(1, 204528025), (5, 40905605), (13, 15732925), (25, 8181121), (65, 3146585), (169, 1210225), (325, 629317), (845, 242045), (4225, 48409)]