20538993

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{1409}}^1$

素因数の和:1568

約数の個数: 16

約数和(自身を含む): 28290240

約数和(自身を除く): 7751247

約数列:

[1, 3, 43, 113, 129, 339, 1409, 4227, 4859, 14577, 60587, 159217, 181761, 477651, 6846331, 20538993]

約数ペア:

[(1, 20538993), (3, 6846331), (43, 477651), (113, 181761), (129, 159217), (339, 60587), (1409, 14577), (4227, 4859)]