2.1 GCDs

Divisors


  1. How many prime divisors does 12 have?
    Exercise 1

    The prime divisors are 2 and 3.

  2. How many positive divisors does 12 have?
    Exercise 2

    The positive divisors are 1, 2, 3, 4, 6, and 12.

  3. How many divisors does 12 have?
    Exercise 3

    The divisors are \(\pm\) 1, \(\pm\) 2, \(\pm\) 3, \(\pm\) 4, \(\pm\) 6, and \(\pm\) 12.