20421716

素因数分解:

$2^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{3779}}^1$

素因数の和:3983

約数の個数: 24

約数和(自身を含む): 41065920

約数和(自身を除く): 20644204

約数列:

[1, 2, 4, 7, 14, 28, 193, 386, 772, 1351, 2702, 3779, 5404, 7558, 15116, 26453, 52906, 105812, 729347, 1458694, 2917388, 5105429, 10210858, 20421716]

約数ペア:

[(1, 20421716), (2, 10210858), (4, 5105429), (7, 2917388), (14, 1458694), (28, 729347), (193, 105812), (386, 52906), (772, 26453), (1351, 15116), (2702, 7558), (3779, 5404)]