20189525

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{239}}^1$

素因数の和:389

約数の個数: 24

約数和(自身を含む): 26188800

約数和(自身を除く): 5999275

約数列:

[1, 5, 25, 31, 109, 155, 239, 545, 775, 1195, 2725, 3379, 5975, 7409, 16895, 26051, 37045, 84475, 130255, 185225, 651275, 807581, 4037905, 20189525]

約数ペア:

[(1, 20189525), (5, 4037905), (25, 807581), (31, 651275), (109, 185225), (155, 130255), (239, 84475), (545, 37045), (775, 26051), (1195, 16895), (2725, 7409), (3379, 5975)]