189889780

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{47711}}^1$

素因数の和:47919

約数の個数: 24

約数和(自身を含む): 400780800

約数和(自身を除く): 210891020

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 47711, 95422, 190844, 238555, 477110, 954220, 9494489, 18988978, 37977956, 47472445, 94944890, 189889780]

約数ペア:

[(1, 189889780), (2, 94944890), (4, 47472445), (5, 37977956), (10, 18988978), (20, 9494489), (199, 954220), (398, 477110), (796, 238555), (995, 190844), (1990, 95422), (3980, 47711)]