Dene a function S: Z+ Z+ as follows: For each positive
Chapter 7, Problem 7.18(choose chapter or problem)
Dene a function S: Z+ Z+ as follows: For each positive integer n, S(n) =the sum of the positive divisors of n. Find the following: a. S(1) b. S(15) c. S(17) d. S(5) e. S(18) f. S(21)
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