39972880

素因数分解:

$2^4\times 5^1\times {\mathrm{499661}}^1$

素因数の和:499674

約数の個数: 20

約数和(自身を含む): 92937132

約数和(自身を除く): 52964252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499661, 999322, 1998644, 2498305, 3997288, 4996610, 7994576, 9993220, 19986440, 39972880]

約数ペア:

[(1, 39972880), (2, 19986440), (4, 9993220), (5, 7994576), (8, 4996610), (10, 3997288), (16, 2498305), (20, 1998644), (40, 999322), (80, 499661)]