20488657

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:448

約数の個数: 16

約数和(自身を含む): 23924992

約数和(自身を除く): 3436335

約数列:

[1, 7, 103, 157, 181, 721, 1099, 1267, 16171, 18643, 28417, 113197, 130501, 198919, 2926951, 20488657]

約数ペア:

[(1, 20488657), (7, 2926951), (103, 198919), (157, 130501), (181, 113197), (721, 28417), (1099, 18643), (1267, 16171)]