20881868

素因数分解:

$2^2\times 7^1\times {\mathrm{337}}^1\times {\mathrm{2213}}^1$

素因数の和:2561

約数の個数: 24

約数和(自身を含む): 41906592

約数和(自身を除く): 21024724

約数列:

[1, 2, 4, 7, 14, 28, 337, 674, 1348, 2213, 2359, 4426, 4718, 8852, 9436, 15491, 30982, 61964, 745781, 1491562, 2983124, 5220467, 10440934, 20881868]

約数ペア:

[(1, 20881868), (2, 10440934), (4, 5220467), (7, 2983124), (14, 1491562), (28, 745781), (337, 61964), (674, 30982), (1348, 15491), (2213, 9436), (2359, 8852), (4426, 4718)]