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05-sum_of_divisors/README.md

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+WTF - Write Totatives Finder
+=================
+
+The divisors of a number are those numbers that divide it evenly; for example, the divisors of 60 are `1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60`. The sum of the divisors of 60 is 168, and the number of divisors of 60 is 12.
+
+The totatives of a number are those numbers less than the given number and coprime to it. Two numbers are coprime if they have no common factors other than 1. 
+
+For example, the totatives of 30 are `1, 7, 11, 13, 17, 19, 23, and 29`.
+
+The number of totatives of a given number is called its totient. As you can see above, the totient of 30 is 8. 
+
+Your task is to write a small library of five functions that compute the divisors of a number, the sum and number of its divisors, the totatives of a number, and its totient.
+
+_Hint_: The functions can call each other!

05-sum_of_divisors/wtf.py

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+def compute_divisors(num):
+	pass
+
+def sum_of_divisors(num):
+	pass
+
+def divisor_count(num):
+	pass
+
+def get_totatives(num):
+	pass
+
+def totient(num):
+	pass