19684821

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{7109}}^1$

素因数の和:7196

約数の個数: 16

約数和(自身を含む): 28667520

約数和(自身を除く): 8982699

約数列:

[1, 3, 13, 39, 71, 213, 923, 2769, 7109, 21327, 92417, 277251, 504739, 1514217, 6561607, 19684821]

約数ペア:

[(1, 19684821), (3, 6561607), (13, 1514217), (39, 504739), (71, 277251), (213, 92417), (923, 21327), (2769, 7109)]