A perfect number is a positive integer that is equal to the sum of its proper divisors excluding itself. For example 6 is a perfect number because its divisors are 1 2 and 3 and 1 + 2 + 3 = 6. Perfect numbers are rare and have special mathematical significance.
This chapter focuses on prime numbers composite numbers and their properties. It teaches how to identify factors and find prime factorization. Students also learn about perfect numbers and divisibility rules. The chapter builds skills for solving problems related to HCF and LCM while enhancing number analysis and reasoning.
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The smallest perfect number is 6. A perfect number is a positive integer that is equal to the sum of its proper divisors. The divisors of 6 are 1 2 and 3. The sum of these divisors is 6 which makes it a perfect number.
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