18906713

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{2731}}^1$

素因数の和:2804

約数の個数: 16

約数和(自身を含む): 23079936

約数和(自身を除く): 4173223

約数列:

[1, 7, 23, 43, 161, 301, 989, 2731, 6923, 19117, 62813, 117433, 439691, 822031, 2700959, 18906713]

約数ペア:

[(1, 18906713), (7, 2700959), (23, 822031), (43, 439691), (161, 117433), (301, 62813), (989, 19117), (2731, 6923)]