H.C.F. of two numbers is 23 and their product is 9522. How many such pairs of numbers can be formed? 

Let the number be 23x and 23y

Product of number = 9522

$23x\times 23y=9522$

$xy=\frac{9522}{23}$

$xy=414$

X and Y HCF must be 1

$Pairsare(23,18)(2,207)(46,9)$