21440584

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{243643}}^1$

素因数の和:243660

約数の個数: 16

約数和(自身を含む): 43855920

約数和(自身を除く): 22415336

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 243643, 487286, 974572, 1949144, 2680073, 5360146, 10720292, 21440584]

約数ペア:

[(1, 21440584), (2, 10720292), (4, 5360146), (8, 2680073), (11, 1949144), (22, 974572), (44, 487286), (88, 243643)]