28657685

素因数分解:

$5^1\times 7^1\times {\mathrm{569}}^1\times {\mathrm{1439}}^1$

素因数の和:2020

約数の個数: 16

約数和(自身を含む): 39398400

約数和(自身を除く): 10740715

約数列:

[1, 5, 7, 35, 569, 1439, 2845, 3983, 7195, 10073, 19915, 50365, 818791, 4093955, 5731537, 28657685]

約数ペア:

[(1, 28657685), (5, 5731537), (7, 4093955), (35, 818791), (569, 50365), (1439, 19915), (2845, 10073), (3983, 7195)]