20807829

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7681}}^1$

素因数の和:7737

約数の個数: 24

約数和(自身を含む): 35152832

約数和(自身を除く): 14345003

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 301, 387, 903, 2709, 7681, 23043, 53767, 69129, 161301, 330283, 483903, 990849, 2311981, 2972547, 6935943, 20807829]

約数ペア:

[(1, 20807829), (3, 6935943), (7, 2972547), (9, 2311981), (21, 990849), (43, 483903), (63, 330283), (129, 161301), (301, 69129), (387, 53767), (903, 23043), (2709, 7681)]