263644225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{62401}}^1$

素因数の和:62437

約数の個数: 18

約数和(自身を含む): 354006546

約数和(自身を除く): 90362321

約数列:

[1, 5, 13, 25, 65, 169, 325, 845, 4225, 62401, 312005, 811213, 1560025, 4056065, 10545769, 20280325, 52728845, 263644225]

約数ペア:

[(1, 263644225), (5, 52728845), (13, 20280325), (25, 10545769), (65, 4056065), (169, 1560025), (325, 811213), (845, 312005), (4225, 62401)]