21311996

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{14759}}^1$

素因数の和:14801

約数の個数: 18

約数和(自身を含む): 39364920

約数和(自身を除く): 18052924

約数列:

[1, 2, 4, 19, 38, 76, 361, 722, 1444, 14759, 29518, 59036, 280421, 560842, 1121684, 5327999, 10655998, 21311996]

約数ペア:

[(1, 21311996), (2, 10655998), (4, 5327999), (19, 1121684), (38, 560842), (76, 280421), (361, 59036), (722, 29518), (1444, 14759)]