Number of Divisors

5.2 Outline

1. Divisibility
   1. definition
      1. divisor
      2. factor
      3. divides
      4. multiple
   2. number of divisors
      1. divisibility rule for 2
      2. divisibility rule for 3
      3. rules of divisibility for 1-12
   3. finding primes
      1. definitions
         1. prime number
         2. composite number
      2. sieve of Eratosthenes
   4. prime factorization
      1. factoring
      2. prime factorization
      3. fundamental