What two numbers have a GCF of 2820?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 2820.

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 2820. Below is the beginning list of multiples of 2820 (1 through 7) in numerical order.

1. 2820
2. 5640
3. 8460
4. 11280
5. 14100
6. 16920
7. 19740
etc...

Two numbers that have a GCF of 2820 can be 2820 and any other number on the list above. Thus, two numbers that have a GCF of 2820 are:

2820 & 5640
2820 & 8460
2820 & 11280
etc...

That is not all! Any combination of any multiple of 2820 and "odd" multiples of 2820 will also have GCF of 2820. 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 2820.

5640 & 8460
5640 & 14100
11280 & 14100
11280 & 19740
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 2820. 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 2820, what are the numbers?" or "What are two numbers whose GCF is 2820?"

What two numbers have a GCF of 2821?
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