The greatest common factor is in the factor pair with the number 5. Therefore 720 has exactly 30 factors.

None of those were very attractive, but here are some that are much better looking: Search for: Here are some of MANY possible factor trees for 720: Prime factorization: Because 5 is one of its factors, 720 is the hypotenuse of the Pythagorean triple 432-576-720. Sorry, your blog cannot share posts by email.

Share this: Here are some other random facts about the number 720: The sum of the interior angles of any hexagon is 720 degrees. The fundamental counting principle tells us the easiest way to count all those dinners is to multiply together the number of items in each column. All 15 factor pairs for 720 are listed at the end of the post.

Since I hosted a Christmas Eve dinner for my extended family, I thought of some of the many ways people could fill up their plates. If we made a tree diagram of all the possible dinners that could be made with exactly one item from each column, it would contain 720 lines and require quite a few pages. What is the greatest common factor of those 3 numbers?

On the other hand, factor trees for 720 are easy to make. Like this: Like Loading...