21687652

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{18013}}^1$

素因数の和:18067

約数の個数: 24

約数和(自身を含む): 44386496

約数和(自身を除く): 22698844

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 18013, 36026, 72052, 126091, 252182, 504364, 774559, 1549118, 3098236, 5421913, 10843826, 21687652]

約数ペア:

[(1, 21687652), (2, 10843826), (4, 5421913), (7, 3098236), (14, 1549118), (28, 774559), (43, 504364), (86, 252182), (172, 126091), (301, 72052), (602, 36026), (1204, 18013)]