21306956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{5441}}^1$

素因数の和:5545

約数の個数: 24

約数和(自身を含む): 41141520

約数和(自身を除く): 19834564

約数列:

[1, 2, 4, 11, 22, 44, 89, 178, 356, 979, 1958, 3916, 5441, 10882, 21764, 59851, 119702, 239404, 484249, 968498, 1936996, 5326739, 10653478, 21306956]

約数ペア:

[(1, 21306956), (2, 10653478), (4, 5326739), (11, 1936996), (22, 968498), (44, 484249), (89, 239404), (178, 119702), (356, 59851), (979, 21764), (1958, 10882), (3916, 5441)]