21099188

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{20849}}^1$

素因数の和:20887

約数の個数: 24

約数和(自身を含む): 42033600

約数和(自身を除く): 20934412

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 253, 506, 1012, 20849, 41698, 83396, 229339, 458678, 479527, 917356, 959054, 1918108, 5274797, 10549594, 21099188]

約数ペア:

[(1, 21099188), (2, 10549594), (4, 5274797), (11, 1918108), (22, 959054), (23, 917356), (44, 479527), (46, 458678), (92, 229339), (253, 83396), (506, 41698), (1012, 20849)]