Some amicable numbers are (1184, 1210), (2620, 2924), (5020, 5564), and (6232, 6368). Exclusive themed charts and worksheets to identify and differentiate between the prime and composite numbers are given here with interactive activities. ![]() ![]() Some of the deficient numbers are 3, 4, 5, 7, 8, 9 and 10.Īmicable numbers are two different numbers related in a way that the proper divisors of each is equal to the other number. For example, 14 is a deficient number since 1 + 2 + 7 is less than 14. Example: Find if 14 is a composite number. For example, 15 has factors 1, 3, 5, and 15, hence it is a composite number. They are numbers whose sum of factors is less than the number itself. A composite number is a natural number or a positive integer which has more than two factors. The numbers 18, 20, 24, 30, 36, and 40 are abundant numbers.Įrratum: Some deficient numbers enumerated below are prime numbers, not composite:ĭeficient numbers are opposites of abundant numbers. The number 12 is an abundant number since the sum of the proper factors 1 + 2 + 3 + 4 + 6 is greater than 12. Tips: It is recommended to use our online Composite Numbers calculator for better understanding. Twenty eight is also a perfect number since 28 = 1 + 2 + 4 + 7 + 14.Īn abundant number is a positive integer whose sum of proper factors is greater than the number itself. What is Composite Number A positive integer that has at least one divisor other than 1 and itself. For instance, 6 is a perfect number since its proper divisors are 1, 2, and 3 and 6 = 1 + 2 + 3. In this post, we familiarize ourselves with these types of numbers.Ī perfect number is a positive integer that is equal to the sum of its proper divisors (positive divisors of a number that are excluding the number itself). Speaking of composite numbers, there are different types of such numbers that you probably have not heard of.
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