What two numbers have a GCF of 720?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 720.

There is actually an infinite number of answers to this question. First, note that both the numbers we are looking for must be multiples of 720. Below is the beginning list of multiples of 720 (1 through 7) in numerical order.

1. 720
2. 1440
3. 2160
4. 2880
5. 3600
6. 4320
7. 5040
etc...

Two numbers that have a GCF of 720 can be 720 and any other number on the list above. Thus, two numbers that have a GCF of 720 are:

720 & 1440
720 & 2160
720 & 2880
etc...

That is not all! Any combination of any multiple of 720 and "odd" multiples of 720 will also have GCF of 720. We numbered the multiples above so it would be easy to identify the "odd" multiples (number 1, 3, 5, 7, etc). Thus, here are some more examples of two numbers that also have a GCF of 720.

1440 & 2160
1440 & 3600
2880 & 3600
2880 & 5040
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 720. The lists we created can go on forever.

Two numbers have a GCF of Calculator
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Teacher Tip: If you are a teacher, you could ask these questions of your students: "I am thinking of two numbers and the GCF is 720, what are the numbers?" or "What are two numbers whose GCF is 720?"

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