Smallest Abundant Number

Weekly Problem 34 - 2017
An abundant number is a positive integer N such that the sum of the factors of N is larger than 2N. What is the smallest abundant number?
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Problem



An abundant number is a positive integer $N$ such that the sum of the factors of $N$ (not including $N$ itself) is greater than $N$.

What is the smallest abundant number?

If you liked this problem, here is an NRICH task that challenges you to use similar mathematical ideas.