28218385

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{25537}}^1$

素因数の和:25572

約数の個数: 16

約数和(自身を含む): 38613456

約数和(自身を除く): 10395071

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 25537, 127685, 331981, 434129, 1659905, 2170645, 5643677, 28218385]

約数ペア:

[(1, 28218385), (5, 5643677), (13, 2170645), (17, 1659905), (65, 434129), (85, 331981), (221, 127685), (1105, 25537)]