GRE
GRE Quantitative Reasoning Section

Sum of Divisors Comparison

Hard Arithmetic Integers

Let $n$ be an integer such that $n > 1$. Define the function $f(n)$ as the sum of the divisors of $n$. For example, for $n = 6$, the divisors are 1, 2, 3, and 6, so $f(6) = 1 + 2 + 3 + 6 = 12$. Given the following values:

Quantity A: $f(12)$

Quantity B: $f(15)$

Compute both quantities and determine their relationship.

Hint

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