20784753

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2957}}^1$

素因数の和:3045

約数の個数: 24

約数和(自身を含む): 33224256

約数和(自身を除く): 12439503

約数列:

[1, 3, 9, 11, 33, 71, 99, 213, 639, 781, 2343, 2957, 7029, 8871, 26613, 32527, 97581, 209947, 292743, 629841, 1889523, 2309417, 6928251, 20784753]

約数ペア:

[(1, 20784753), (3, 6928251), (9, 2309417), (11, 1889523), (33, 629841), (71, 292743), (99, 209947), (213, 97581), (639, 32527), (781, 26613), (2343, 8871), (2957, 7029)]