This engine determines the abundant, deficient, and perfect numbers from a set of numbers. There is a comment inside to show you how to change the range of numbers. Proper Factors: All factors of a number but the number itself. Abundant: The sum of the proper factors is greater than the number itself. Deficient: The sum of the proper factors is less than the number itself. Perfect: The sum of the proper factors is equal to the number itself. #math#abudant#perfect#deficient#identification#numbers#number#abudants#perfects#deficients#abudantnumbers#deficientnumbers