161685820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{425489}}^1$

素因数の和:425517

約数の個数: 24

約数和(自身を含む): 357411600

約数和(自身を除く): 195725780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 425489, 850978, 1701956, 2127445, 4254890, 8084291, 8509780, 16168582, 32337164, 40421455, 80842910, 161685820]

約数ペア:

[(1, 161685820), (2, 80842910), (4, 40421455), (5, 32337164), (10, 16168582), (19, 8509780), (20, 8084291), (38, 4254890), (76, 2127445), (95, 1701956), (190, 850978), (380, 425489)]