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Omni-MATH / We call the pair (m,n) of positive integers a happy pair if the greatest common divisor of m and n is a perfect square. For example, (20,24) is a happy pair because the greatest co…

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We call the pair (m,n)(m, n) of positive integers a happy pair if the greatest common divisor of mm and nn is a perfect square. For example, (20,24)(20, 24) is a happy pair because the greatest common divisor of 20 and 24 is 4. Suppose that kk is a positive integer such that (205800,35k)(205800, 35k) is a happy pair. What is the number of possible values of kk with k≤2940k \leq 2940?
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We call the pair (m,n) of positive integers a happy pair if the greatest common divisor of m and n is a perfect square. For example, (20,24) is a happy pair because the greatest common divisor of 20 and 24 is 4. Suppose that k is a positive integer such that (205800,35k) is a happy pair. What is the number of possible values of k with k≤2940?
Original LaTeX notation
We call the pair $(m, n)$ of positive integers a happy pair if the greatest common divisor of $m$ and $n$ is a perfect square. For example, $(20, 24)$ is a happy pair because the greatest common divisor of 20 and 24 is 4. Suppose that $k$ is a positive integer such that $(205800, 35k)$ is a happy pair. What is the number of possible values of $k$ with $k \leq 2940$?

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