With what least numbers (integer) 2028 to be multiplied so that it becomes a perfect square ?

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Solution:

⇨ Expanding 2028 as the factors of prime numbers.

⇨ 2028 = 2 x 2 x 3 x 13 x 13

⇨ Here 3 do not have any pair so for a perfect square it must be multiplied by at least 3 to complete the pair.