20431359

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19403}}^1$

素因数の和:19428

約数の個数: 20

約数和(自身を含む): 32870376

約数和(自身を除く): 12439017

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 19403, 58209, 174627, 252239, 523881, 756717, 1571643, 2270151, 6810453, 20431359]

約数ペア:

[(1, 20431359), (3, 6810453), (9, 2270151), (13, 1571643), (27, 756717), (39, 523881), (81, 252239), (117, 174627), (351, 58209), (1053, 19403)]