19877540

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{3779}}^1$

素因数の和:4051

約数の個数: 24

約数和(自身を含む): 41912640

約数和(自身を除く): 22035100

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 3779, 5260, 7558, 15116, 18895, 37790, 75580, 993877, 1987754, 3975508, 4969385, 9938770, 19877540]

約数ペア:

[(1, 19877540), (2, 9938770), (4, 4969385), (5, 3975508), (10, 1987754), (20, 993877), (263, 75580), (526, 37790), (1052, 18895), (1315, 15116), (2630, 7558), (3779, 5260)]