20512221759

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{17667719}}^1$

素因数の和:17667771

約数の個数: 16

約数和(自身を含む): 31095187200

約数和(自身を除く): 10582965441

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 17667719, 53003157, 159009471, 477028413, 759711917, 2279135751, 6837407253, 20512221759]

約数ペア:

[(1, 20512221759), (3, 6837407253), (9, 2279135751), (27, 759711917), (43, 477028413), (129, 159009471), (387, 53003157), (1161, 17667719)]