20339557

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{3121}}^1$

素因数の和:3161

約数の個数: 16

約数和(自身を含む): 24976000

約数和(自身を除く): 4636443

約数列:

[1, 7, 19, 49, 133, 343, 931, 3121, 6517, 21847, 59299, 152929, 415093, 1070503, 2905651, 20339557]

約数ペア:

[(1, 20339557), (7, 2905651), (19, 1070503), (49, 415093), (133, 152929), (343, 59299), (931, 21847), (3121, 6517)]