20456077820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23786137}}^1$

素因数の和:23786189

約数の個数: 24

約数和(自身を含む): 43956783024

約数和(自身を除く): 23500705204

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23786137, 47572274, 95144548, 118930685, 237861370, 475722740, 1022803891, 2045607782, 4091215564, 5114019455, 10228038910, 20456077820]

約数ペア:

[(1, 20456077820), (2, 10228038910), (4, 5114019455), (5, 4091215564), (10, 2045607782), (20, 1022803891), (43, 475722740), (86, 237861370), (172, 118930685), (215, 95144548), (430, 47572274), (860, 23786137)]