21687764

素因数分解:

$2^2\times 7^1\times {\mathrm{523}}^1\times {\mathrm{1481}}^1$

素因数の和:2015

約数の個数: 24

約数和(自身を含む): 43487808

約数和(自身を除く): 21800044

約数列:

[1, 2, 4, 7, 14, 28, 523, 1046, 1481, 2092, 2962, 3661, 5924, 7322, 10367, 14644, 20734, 41468, 774563, 1549126, 3098252, 5421941, 10843882, 21687764]

約数ペア:

[(1, 21687764), (2, 10843882), (4, 5421941), (7, 3098252), (14, 1549126), (28, 774563), (523, 41468), (1046, 20734), (1481, 14644), (2092, 10367), (2962, 7322), (3661, 5924)]