20659438

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{1993}}^1$

素因数の和:2139

約数の個数: 16

約数和(自身を含む): 31872096

約数和(自身を除く): 11212658

約数列:

[1, 2, 71, 73, 142, 146, 1993, 3986, 5183, 10366, 141503, 145489, 283006, 290978, 10329719, 20659438]

約数ペア:

[(1, 20659438), (2, 10329719), (71, 290978), (73, 283006), (142, 145489), (146, 141503), (1993, 10366), (3986, 5183)]