What two numbers have a GCF of 26?

Here we will explain and show you how to find what two numbers have the Greatest Common Factor (GCF) of 26.

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 26. Below is the beginning list of multiples of 26 (1 through 7) in numerical order.

1. 26
2. 52
3. 78
4. 104
5. 130
6. 156
7. 182
etc...

Two numbers that have a GCF of 26 can be 26 and any other number on the list above. Thus, two numbers that have a GCF of 26 are:

26 & 52
26 & 78
26 & 104
etc...

That is not all! Any combination of any multiple of 26 and "odd" multiples of 26 will also have GCF of 26. 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 26.

52 & 78
52 & 130
104 & 130
104 & 182
etc...

Like we stated above, there are infinite combinations of two numbers whose GCF is 26. 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 26, what are the numbers?" or "What are two numbers whose GCF is 26?"

What two numbers have a GCF of 27?
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