20936905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{2521}}^1$

素因数の和:2688

約数の個数: 16

約数和(自身を含む): 27600768

約数和(自身を除く): 6663863

約数列:

[1, 5, 11, 55, 151, 755, 1661, 2521, 8305, 12605, 27731, 138655, 380671, 1903355, 4187381, 20936905]

約数ペア:

[(1, 20936905), (5, 4187381), (11, 1903355), (55, 380671), (151, 138655), (755, 27731), (1661, 12605), (2521, 8305)]