20809162

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21997}}^1$

素因数の和:22053

約数の個数: 16

約数和(自身を含む): 34844832

約数和(自身を除く): 14035670

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 21997, 43994, 241967, 483934, 945871, 1891742, 10404581, 20809162]

約数ペア:

[(1, 20809162), (2, 10404581), (11, 1891742), (22, 945871), (43, 483934), (86, 241967), (473, 43994), (946, 21997)]