Question 37
For each positive integer $n$, let $d(n)$ denote the number of all positive divisors of $n$. (Examples: $d(2)=2, d(6)=4, d(9)=3$.)
Determine all positive integers $n$ with the property $(d(n))^3 = 4n$.
Determine all positive integers $n$ with the property $(d(n))^3 = 4n$.