21556906

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{81041}}^1$

素因数の和:81069

約数の個数: 16

約数和(自身を含む): 38900160

約数和(自身を除く): 17343254

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 81041, 162082, 567287, 1134574, 1539779, 3079558, 10778453, 21556906]

約数ペア:

[(1, 21556906), (2, 10778453), (7, 3079558), (14, 1539779), (19, 1134574), (38, 567287), (133, 162082), (266, 81041)]