128826440

素因数分解:

$2^3\times 5^1\times {\mathrm{3220661}}^1$

素因数の和:3220672

約数の個数: 16

約数和(自身を含む): 289859580

約数和(自身を除く): 161033140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3220661, 6441322, 12882644, 16103305, 25765288, 32206610, 64413220, 128826440]

約数ペア:

[(1, 128826440), (2, 64413220), (4, 32206610), (5, 25765288), (8, 16103305), (10, 12882644), (20, 6441322), (40, 3220661)]