28721121

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{66949}}^1$

素因数の和:66976

約数の個数: 16

約数和(自身を含む): 44990400

約数和(自身を除く): 16269279

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 66949, 200847, 736439, 870337, 2209317, 2611011, 9573707, 28721121]

約数ペア:

[(1, 28721121), (3, 9573707), (11, 2611011), (13, 2209317), (33, 870337), (39, 736439), (143, 200847), (429, 66949)]