21140812

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68639}}^1$

素因数の和:68661

約数の個数: 24

約数和(自身を含む): 46126080

約数和(自身を除く): 24985268

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68639, 137278, 274556, 480473, 755029, 960946, 1510058, 1921892, 3020116, 5285203, 10570406, 21140812]

約数ペア:

[(1, 21140812), (2, 10570406), (4, 5285203), (7, 3020116), (11, 1921892), (14, 1510058), (22, 960946), (28, 755029), (44, 480473), (77, 274556), (154, 137278), (308, 68639)]