171085820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{198937}}^1$

素因数の和:198989

約数の個数: 24

約数和(自身を含む): 367637424

約数和(自身を除く): 196551604

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 198937, 397874, 795748, 994685, 1989370, 3978740, 8554291, 17108582, 34217164, 42771455, 85542910, 171085820]

約数ペア:

[(1, 171085820), (2, 85542910), (4, 42771455), (5, 34217164), (10, 17108582), (20, 8554291), (43, 3978740), (86, 1989370), (172, 994685), (215, 795748), (430, 397874), (860, 198937)]