What two numbers have a GCF of 620?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 620.

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 620. Below is the beginning list of multiples of 620 (1 through 7) in numerical order.

1. 620
2. 1240
3. 1860
4. 2480
5. 3100
6. 3720
7. 4340
etc...

Two numbers that have a GCF of 620 can be 620 and any other number on the list above. Thus, two numbers that have a GCF of 620 are:

620 & 1240
620 & 1860
620 & 2480
etc...

That is not all! Any combination of any multiple of 620 and "odd" multiples of 620 will also have GCF of 620. 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 620.

1240 & 1860
1240 & 3100
2480 & 3100
2480 & 4340
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 620. 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 620, what are the numbers?" or "What are two numbers whose GCF is 620?"

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