20867561

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1999}}^1$

素因数の和:2096

約数の個数: 16

約数和(自身を含む): 24864000

約数和(自身を除く): 3996439

約数列:

[1, 11, 13, 73, 143, 803, 949, 1999, 10439, 21989, 25987, 145927, 285857, 1605197, 1897051, 20867561]

約数ペア:

[(1, 20867561), (11, 1897051), (13, 1605197), (73, 285857), (143, 145927), (803, 25987), (949, 21989), (1999, 10439)]