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Abundant Numbers printable sheet
To find the factors of a number, you have to find all the pairs of numbers that multiply together to give that number.
The factors of $48$ are:
$1$ and $48$
$2$ and $24$
$3$ and $16$
$4$ and $12$
$6$ and $8$
If we leave out the number we started with, $48$, and add all the other factors, we get $76$:
$1 + 2 + 3 + 4 + 6 + 8 + 12 + 16 + 24 = 76$
So ... $48$ is called an abundant number because it is less than the sum of its factors (without itself). ($48$ is less than $76$.)
See if you can find some more abundant numbers!