Abundant Number at Math Glossary

What is it? A number for which the sum of all the proper factors is greater than the number itself. For example, 12 is an abundant number because the sum of its proper factors is 1 + 2 + 3 + 4 + 6 = 16, and 16 is greater than 12. See also deficient number, perfect

Mathematical Term Added By: Camryn

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