199385020

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{22709}}^1$

素因数の和:23157

約数の個数: 24

約数和(自身を含む): 419680800

約数和(自身を除く): 220295780

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 8780, 22709, 45418, 90836, 113545, 227090, 454180, 9969251, 19938502, 39877004, 49846255, 99692510, 199385020]

約数ペア:

[(1, 199385020), (2, 99692510), (4, 49846255), (5, 39877004), (10, 19938502), (20, 9969251), (439, 454180), (878, 227090), (1756, 113545), (2195, 90836), (4390, 45418), (8780, 22709)]