20680975

素因数分解:

$5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2003}}^1$

素因数の和:2079

約数の個数: 24

約数和(自身を含む): 29819520

約数和(自身を除く): 9138545

約数列:

[1, 5, 7, 25, 35, 59, 175, 295, 413, 1475, 2003, 2065, 10015, 10325, 14021, 50075, 70105, 118177, 350525, 590885, 827239, 2954425, 4136195, 20680975]

約数ペア:

[(1, 20680975), (5, 4136195), (7, 2954425), (25, 827239), (35, 590885), (59, 350525), (175, 118177), (295, 70105), (413, 50075), (1475, 14021), (2003, 10325), (2065, 10015)]