21094768

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{30661}}^1$

素因数の和:30712

約数の個数: 20

約数和(自身を含む): 41822968

約数和(自身を除く): 20728200

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 30661, 61322, 122644, 245288, 490576, 1318423, 2636846, 5273692, 10547384, 21094768]

約数ペア:

[(1, 21094768), (2, 10547384), (4, 5273692), (8, 2636846), (16, 1318423), (43, 490576), (86, 245288), (172, 122644), (344, 61322), (688, 30661)]