20975675

素因数分解:

$5^2\times 7^2\times {\mathrm{17123}}^1$

素因数の和:17147

約数の個数: 18

約数和(自身を含む): 30258108

約数和(自身を除く): 9282433

約数列:

[1, 5, 7, 25, 35, 49, 175, 245, 1225, 17123, 85615, 119861, 428075, 599305, 839027, 2996525, 4195135, 20975675]

約数ペア:

[(1, 20975675), (5, 4195135), (7, 2996525), (25, 839027), (35, 599305), (49, 428075), (175, 119861), (245, 85615), (1225, 17123)]