21402953

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1543}}^1$

素因数の和:1664

約数の個数: 16

約数和(自身を含む): 25420416

約数和(自身を除く): 4017463

約数列:

[1, 11, 13, 97, 143, 1067, 1261, 1543, 13871, 16973, 20059, 149671, 220649, 1646381, 1945723, 21402953]

約数ペア:

[(1, 21402953), (11, 1945723), (13, 1646381), (97, 220649), (143, 149671), (1067, 20059), (1261, 16973), (1543, 13871)]