20388669

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{31319}}^1$

素因数の和:31360

約数の個数: 16

約数和(自身を含む): 32071680

約数和(自身を除く): 11683011

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 31319, 93957, 219233, 657699, 970889, 2912667, 6796223, 20388669]

約数ペア:

[(1, 20388669), (3, 6796223), (7, 2912667), (21, 970889), (31, 657699), (93, 219233), (217, 93957), (651, 31319)]