20804125

素因数分解:

$5^3\times {\mathrm{149}}^1\times {\mathrm{1117}}^1$

素因数の和:1281

約数の個数: 16

約数和(自身を含む): 26161200

約数和(自身を除く): 5357075

約数列:

[1, 5, 25, 125, 149, 745, 1117, 3725, 5585, 18625, 27925, 139625, 166433, 832165, 4160825, 20804125]

約数ペア:

[(1, 20804125), (5, 4160825), (25, 832165), (125, 166433), (149, 139625), (745, 27925), (1117, 18625), (3725, 5585)]