Let the numbers 13a and 13b.Then, 13a x 13b = 2028 ab = 12.Now, the co-primes with product 12 are (1, 12) and (3, 4).[Note: Two integers a and b are said to be coprime or relatively prime if they have no common positive factor other than 1 or, equivalently, if their greatest common divisor is 1 ]So, the required numbers are (13 x 1, 13 x 12) and (13 x 3, 13 x 4).Clearly, there are 2 such pairs
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