What two numbers have a GCF of 1640?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 1640.

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 1640. Below is the beginning list of multiples of 1640 (1 through 7) in numerical order.

1. 1640
2. 3280
3. 4920
4. 6560
5. 8200
6. 9840
7. 11480
etc...

Two numbers that have a GCF of 1640 can be 1640 and any other number on the list above. Thus, two numbers that have a GCF of 1640 are:

1640 & 3280
1640 & 4920
1640 & 6560
etc...

That is not all! Any combination of any multiple of 1640 and "odd" multiples of 1640 will also have GCF of 1640. 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 1640.

3280 & 4920
3280 & 8200
6560 & 8200
6560 & 11480
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 1640. 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 1640, what are the numbers?" or "What are two numbers whose GCF is 1640?"

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