16397225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{3881}}^1$

素因数の和:3917

約数の個数: 18

約数和(自身を含む): 22022586

約数和(自身を除く): 5625361

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 3881, 4225, 19405, 50453, 97025, 252265, 655889, 1261325, 3279445, 16397225]

約数ペア:

[(1, 16397225), (5, 3279445), (13, 1261325), (25, 655889), (65, 252265), (169, 97025), (325, 50453), (845, 19405), (3881, 4225)]