18806740

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{11903}}^1$

素因数の和:11991

約数の個数: 24

約数和(自身を含む): 39997440

約数和(自身を除く): 21190700

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 11903, 23806, 47612, 59515, 119030, 238060, 940337, 1880674, 3761348, 4701685, 9403370, 18806740]

約数ペア:

[(1, 18806740), (2, 9403370), (4, 4701685), (5, 3761348), (10, 1880674), (20, 940337), (79, 238060), (158, 119030), (316, 59515), (395, 47612), (790, 23806), (1580, 11903)]