28236820

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{3187}}^1$

素因数の和:3639

約数の個数: 24

約数和(自身を含む): 59449824

約数和(自身を除く): 31213004

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 3187, 4430, 6374, 8860, 12748, 15935, 31870, 63740, 1411841, 2823682, 5647364, 7059205, 14118410, 28236820]

約数ペア:

[(1, 28236820), (2, 14118410), (4, 7059205), (5, 5647364), (10, 2823682), (20, 1411841), (443, 63740), (886, 31870), (1772, 15935), (2215, 12748), (3187, 8860), (4430, 6374)]