Question:
Given that $n > 1$, what is the smallest positive integer $n$ whose positive divisors have a product of $n^6$?

Answer:
Let's multiply the divisors of a positive integer, say $12$.  The divisors of $12$ are $1,2,3,4,6,$ and $12$.  The product of the divisors of 12 is $1\cdot2\cdot3\cdot4\cdot6\cdot12=(1\cdot12)(2\cdot 6)(3\cdot4)=12^3$.  The factors may be regrouped in this way for any positive integer with an even number of divisors. We have found that if the number $d$ of divisors is even, then the product of the divisors of $n$ is $n^{d/2}$.  Solving $n^6=n^{d/2}$, we find $d=12$.

Recall that we can determine the number of factors of $n$ by adding $1$ to each of the exponents in the prime factorization of $n$ and multiplying the results.  We work backwards to find the smallest positive integer with $12$ factors.  Twelve may be written as a product of integers greater than 1 in four ways: $12$, $2\cdot 6$, $3\cdot 4$, and $2\cdot2\cdot3$.  The prime factorizations which give rise to these products have sets of exponents $\{11\}$, $\{5,1\}$, $\{3,2\}$, and $\{2,1,1\}$.  In each case, we minimize $n$ by assigning the exponents in decreasing order to the primes $2,3,5,\ldots$.  Therefore, the smallest positive integer with 12 factors must be in the list $2^{11}=2048$, $2^5\cdot3=96$, ${2^3\cdot3^2}=72$, and $2^2\cdot3\cdot5=60$.  The smallest of these is $\boxed{60}$.