28909525

素因数分解:

$5^2\times {\mathrm{103}}^2\times {\mathrm{109}}^1$

素因数の和:325

約数の個数: 18

約数和(自身を含む): 36531330

約数和(自身を除く): 7621805

約数列:

[1, 5, 25, 103, 109, 515, 545, 2575, 2725, 10609, 11227, 53045, 56135, 265225, 280675, 1156381, 5781905, 28909525]

約数ペア:

[(1, 28909525), (5, 5781905), (25, 1156381), (103, 280675), (109, 265225), (515, 56135), (545, 53045), (2575, 11227), (2725, 10609)]