21271375

素因数分解:

$5^3\times {\mathrm{379}}^1\times {\mathrm{449}}^1$

素因数の和:843

約数の個数: 16

約数和(自身を含む): 26676000

約数和(自身を除く): 5404625

約数列:

[1, 5, 25, 125, 379, 449, 1895, 2245, 9475, 11225, 47375, 56125, 170171, 850855, 4254275, 21271375]

約数ペア:

[(1, 21271375), (5, 4254275), (25, 850855), (125, 170171), (379, 56125), (449, 47375), (1895, 11225), (2245, 9475)]