21351575

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7177}}^1$

素因数の和:7211

約数の個数: 24

約数和(自身を含む): 32042592

約数和(自身を除く): 10691017

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 425, 595, 2975, 7177, 35885, 50239, 122009, 179425, 251195, 610045, 854063, 1255975, 3050225, 4270315, 21351575]

約数ペア:

[(1, 21351575), (5, 4270315), (7, 3050225), (17, 1255975), (25, 854063), (35, 610045), (85, 251195), (119, 179425), (175, 122009), (425, 50239), (595, 35885), (2975, 7177)]