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Q: What is the highest common factor of 28 and 21?

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28 is a factor of 56, and 28 is also a factor of itself. So the highest common factor of 28 and 56 is 28.

both numbers have a common factor of 7 divide each by 7: 21/28 = 3/4

The greatest common factor of 28 and 20 is 4.

The greatest common factor of 14, 28, and 70 is 14.

The greatest common factor of 28, 70, and 98 is 14.

Related questions

The GCF is 7.

The highest common factor is 4.

The highest common factor is 7.

The highest common factor of the numbers 28, 84 and 91 is 7.

The highest common factor (HCF) is 7.

The common multiples of 21 and 28 are 84, 168, 252, 336, ... and so on, never ending; so there is no real Highest Common Multiple.Do you mean:Highest Common Factor - the highest number which divides both 21 and 28 which is 7; orLowest Common Multiple - the lowest number which is a multiple of both 21 and 28 which is 84.

4 is the highest common factor of 28 and 32

The Greatest Common Factor of 15, 21, 28: 1

The highest common factor of 28, 49 and 84 is 7.

280 and 196's highest common factor is 28.

The GCF is 28.

15 and 28's highest common factor is one.

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