19936707920

素因数分解:

$2^4\times 5^1\times {\mathrm{249208849}}^1$

素因数の和:249208862

約数の個数: 20

約数和(自身を含む): 46352846100

約数和(自身を除く): 26416138180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 249208849, 498417698, 996835396, 1246044245, 1993670792, 2492088490, 3987341584, 4984176980, 9968353960, 19936707920]

約数ペア:

[(1, 19936707920), (2, 9968353960), (4, 4984176980), (5, 3987341584), (8, 2492088490), (10, 1993670792), (16, 1246044245), (20, 996835396), (40, 498417698), (80, 249208849)]