What two numbers have a GCF of 2020?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 2020.

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 2020. Below is the beginning list of multiples of 2020 (1 through 7) in numerical order.

1. 2020
2. 4040
3. 6060
4. 8080
5. 10100
6. 12120
7. 14140
etc...

Two numbers that have a GCF of 2020 can be 2020 and any other number on the list above. Thus, two numbers that have a GCF of 2020 are:

2020 & 4040
2020 & 6060
2020 & 8080
etc...

That is not all! Any combination of any multiple of 2020 and "odd" multiples of 2020 will also have GCF of 2020. 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 2020.

4040 & 6060
4040 & 10100
8080 & 10100
8080 & 14140
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 2020. 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 2020, what are the numbers?" or "What are two numbers whose GCF is 2020?"

What two numbers have a GCF of 2021?
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