12990875

素因数分解:

$5^3\times {\mathrm{103}}^1\times {\mathrm{1009}}^1$

素因数の和:1127

約数の個数: 16

約数和(自身を含む): 16386240

約数和(自身を除く): 3395365

約数列:

[1, 5, 25, 103, 125, 515, 1009, 2575, 5045, 12875, 25225, 103927, 126125, 519635, 2598175, 12990875]

約数ペア:

[(1, 12990875), (5, 2598175), (25, 519635), (103, 126125), (125, 103927), (515, 25225), (1009, 12875), (2575, 5045)]