9988025

素因数分解:

$5^2\times {\mathrm{67}}^2\times {\mathrm{89}}^1$

素因数の和:233

約数の個数: 18

約数和(自身を含む): 12714030

約数和(自身を除く): 2726005

約数列:

[1, 5, 25, 67, 89, 335, 445, 1675, 2225, 4489, 5963, 22445, 29815, 112225, 149075, 399521, 1997605, 9988025]

約数ペア:

[(1, 9988025), (5, 1997605), (25, 399521), (67, 149075), (89, 112225), (335, 29815), (445, 22445), (1675, 5963), (2225, 4489)]