80785820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{93937}}^1$

素因数の和:93989

約数の個数: 24

約数和(自身を含む): 173597424

約数和(自身を除く): 92811604

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 93937, 187874, 375748, 469685, 939370, 1878740, 4039291, 8078582, 16157164, 20196455, 40392910, 80785820]

約数ペア:

[(1, 80785820), (2, 40392910), (4, 20196455), (5, 16157164), (10, 8078582), (20, 4039291), (43, 1878740), (86, 939370), (172, 469685), (215, 375748), (430, 187874), (860, 93937)]