20804598140

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1049677}}^1$

素因数の和:1050677

約数の個数: 24

約数和(自身を含む): 43733784192

約数和(自身を除く): 22929186052

約数列:

[1, 2, 4, 5, 10, 20, 991, 1982, 3964, 4955, 9910, 19820, 1049677, 2099354, 4198708, 5248385, 10496770, 20993540, 1040229907, 2080459814, 4160919628, 5201149535, 10402299070, 20804598140]

約数ペア:

[(1, 20804598140), (2, 10402299070), (4, 5201149535), (5, 4160919628), (10, 2080459814), (20, 1040229907), (991, 20993540), (1982, 10496770), (3964, 5248385), (4955, 4198708), (9910, 2099354), (19820, 1049677)]