18318781

素因数分解:

${\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:396

約数の個数: 16

約数和(自身を含む): 20321280

約数和(自身を除く): 2002499

約数列:

[1, 13, 71, 89, 223, 923, 1157, 2899, 6319, 15833, 19847, 82147, 205829, 258011, 1409137, 18318781]

約数ペア:

[(1, 18318781), (13, 1409137), (71, 258011), (89, 205829), (223, 82147), (923, 19847), (1157, 15833), (2899, 6319)]