208538875

素因数分解:

$5^3\times {\mathrm{409}}^1\times {\mathrm{4079}}^1$

素因数の和:4503

約数の個数: 16

約数和(自身を含む): 260956800

約数和(自身を除く): 52417925

約数列:

[1, 5, 25, 125, 409, 2045, 4079, 10225, 20395, 51125, 101975, 509875, 1668311, 8341555, 41707775, 208538875]

約数ペア:

[(1, 208538875), (5, 41707775), (25, 8341555), (125, 1668311), (409, 509875), (2045, 101975), (4079, 51125), (10225, 20395)]