28903225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{6841}}^1$

素因数の和:6877

約数の個数: 18

約数和(自身を含む): 38814666

約数和(自身を除く): 9911441

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 6841, 34205, 88933, 171025, 444665, 1156129, 2223325, 5780645, 28903225]

約数ペア:

[(1, 28903225), (5, 5780645), (13, 2223325), (25, 1156129), (65, 444665), (169, 171025), (325, 88933), (845, 34205), (4225, 6841)]