Question
The 13th term in the expansion of $ \left(x^2 + \frac{2}{x} \right)^n $ is independent of $ x $. What is the sum of the divisors of $ n $?
The 13th term in the expansion of $ \left(x^2 + \frac{2}{x} \right)^n $ is independent of $ x $. What is the sum of the divisors of $ n $?