20428860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{340481}}^1$

素因数の和:340493

約数の個数: 24

約数和(自身を含む): 57200976

約数和(自身を除く): 36772116

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 340481, 680962, 1021443, 1361924, 1702405, 2042886, 3404810, 4085772, 5107215, 6809620, 10214430, 20428860]

約数ペア:

[(1, 20428860), (2, 10214430), (3, 6809620), (4, 5107215), (5, 4085772), (6, 3404810), (10, 2042886), (12, 1702405), (15, 1361924), (20, 1021443), (30, 680962), (60, 340481)]