18722405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{2549}}^1$

素因数の和:2680

約数の個数: 16

約数和(自身を含む): 24418800

約数和(自身を除く): 5696395

約数列:

[1, 5, 13, 65, 113, 565, 1469, 2549, 7345, 12745, 33137, 165685, 288037, 1440185, 3744481, 18722405]

約数ペア:

[(1, 18722405), (5, 3744481), (13, 1440185), (65, 288037), (113, 165685), (565, 33137), (1469, 12745), (2549, 7345)]