20998010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{190891}}^1$

素因数の和:190909

約数の個数: 16

約数和(自身を含む): 41232672

約数和(自身を除く): 20234662

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 190891, 381782, 954455, 1908910, 2099801, 4199602, 10499005, 20998010]

約数ペア:

[(1, 20998010), (2, 10499005), (5, 4199602), (10, 2099801), (11, 1908910), (22, 954455), (55, 381782), (110, 190891)]