20641588

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{469127}}^1$

素因数の和:469142

約数の個数: 12

約数和(自身を含む): 39406752

約数和(自身を除く): 18765164

約数列:

[1, 2, 4, 11, 22, 44, 469127, 938254, 1876508, 5160397, 10320794, 20641588]

約数ペア:

[(1, 20641588), (2, 10320794), (4, 5160397), (11, 1876508), (22, 938254), (44, 469127)]