19780508

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{449557}}^1$

素因数の和:449572

約数の個数: 12

約数和(自身を含む): 37762872

約数和(自身を除く): 17982364

約数列:

[1, 2, 4, 11, 22, 44, 449557, 899114, 1798228, 4945127, 9890254, 19780508]

約数ペア:

[(1, 19780508), (2, 9890254), (4, 4945127), (11, 1798228), (22, 899114), (44, 449557)]