21115684

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{499}}^1$

素因数の和:723

約数の個数: 24

約数和(自身を含む): 37800000

約数和(自身を除く): 16684316

約数列:

[1, 2, 4, 71, 142, 149, 284, 298, 499, 596, 998, 1996, 10579, 21158, 35429, 42316, 70858, 74351, 141716, 148702, 297404, 5278921, 10557842, 21115684]

約数ペア:

[(1, 21115684), (2, 10557842), (4, 5278921), (71, 297404), (142, 148702), (149, 141716), (284, 74351), (298, 70858), (499, 42316), (596, 35429), (998, 21158), (1996, 10579)]