20778010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{188891}}^1$

素因数の和:188909

約数の個数: 16

約数和(自身を含む): 40800672

約数和(自身を除く): 20022662

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 188891, 377782, 944455, 1888910, 2077801, 4155602, 10389005, 20778010]

約数ペア:

[(1, 20778010), (2, 10389005), (5, 4155602), (10, 2077801), (11, 1888910), (22, 944455), (55, 377782), (110, 188891)]