An integer n is called perfect provided it equals the sum of all its divisors that are

Chapter 3, Problem 3.13

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An integer n is called perfect provided it equals the sum of all its divisors that are both positive and less than n. For example, 28 is perfect because the positive divisors of 28 are 1, 2, 4, 7, 14, and 28. Note that 1 C 2 C 4 C 7 C 14 D 28. a. There is a perfect number smaller than 28. Find it. b. Write a computer program to find the next perfect number after 28.

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