20487620

素因数分解:

$2^2\times 5^1\times {\mathrm{863}}^1\times {\mathrm{1187}}^1$

素因数の和:2059

約数の個数: 24

約数和(自身を含む): 43110144

約数和(自身を除く): 22622524

約数列:

[1, 2, 4, 5, 10, 20, 863, 1187, 1726, 2374, 3452, 4315, 4748, 5935, 8630, 11870, 17260, 23740, 1024381, 2048762, 4097524, 5121905, 10243810, 20487620]

約数ペア:

[(1, 20487620), (2, 10243810), (4, 5121905), (5, 4097524), (10, 2048762), (20, 1024381), (863, 23740), (1187, 17260), (1726, 11870), (2374, 8630), (3452, 5935), (4315, 4748)]