80685580

素因数分解:

$2^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{20903}}^1$

素因数の和:21105

約数の個数: 24

約数和(自身を含む): 170325792

約数和(自身を除く): 89640212

約数列:

[1, 2, 4, 5, 10, 20, 193, 386, 772, 965, 1930, 3860, 20903, 41806, 83612, 104515, 209030, 418060, 4034279, 8068558, 16137116, 20171395, 40342790, 80685580]

約数ペア:

[(1, 80685580), (2, 40342790), (4, 20171395), (5, 16137116), (10, 8068558), (20, 4034279), (193, 418060), (386, 209030), (772, 104515), (965, 83612), (1930, 41806), (3860, 20903)]