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How many ordered pairs of positive integers \((m,n)\) satisfy \(gcd(m,n) = 2\) and \(\mathop{\text{lcm}}[m,n] = 108\)?

 Feb 7, 2018
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The number of ordered pairs (m,n) such that gcd(m,n) = 2 and lcm(m,n) = 108 is 14.

 Dec 1, 2019

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