21942556

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{193}}^1\times {\mathrm{661}}^1$

素因数の和:901

約数の個数: 24

約数和(自身を含む): 39555824

約数和(自身を除く): 17613268

約数列:

[1, 2, 4, 43, 86, 172, 193, 386, 661, 772, 1322, 2644, 8299, 16598, 28423, 33196, 56846, 113692, 127573, 255146, 510292, 5485639, 10971278, 21942556]

約数ペア:

[(1, 21942556), (2, 10971278), (4, 5485639), (43, 510292), (86, 255146), (172, 127573), (193, 113692), (386, 56846), (661, 33196), (772, 28423), (1322, 16598), (2644, 8299)]