20496820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53939}}^1$

素因数の和:53967

約数の個数: 24

約数和(自身を含む): 45309600

約数和(自身を除く): 24812780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 53939, 107878, 215756, 269695, 539390, 1024841, 1078780, 2049682, 4099364, 5124205, 10248410, 20496820]

約数ペア:

[(1, 20496820), (2, 10248410), (4, 5124205), (5, 4099364), (10, 2049682), (19, 1078780), (20, 1024841), (38, 539390), (76, 269695), (95, 215756), (190, 107878), (380, 53939)]