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Unformatted text preview: d ( n ) is odd if and only if n is a perfect square. Exercise 3. 4.2.14: For any n , show that there are only ﬁnitely many numbers whose divisors add up to n . Exercise 4. 4.3.17: Suppose F and f are related by F ( n ) = ∑ d | n f ( d ) . Show that if F is multiplicative then so is f . (The other direction has been shown in class.) Exercise 5. 4.3.16: Show that f * g is multiplicative if f and g are multiplicative....
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This note was uploaded on 04/05/2010 for the course CS 150 taught by Professor Humphreys,g during the Spring '08 term at UVA.
- Spring '08