Can a number be a factor of itself

eg 12 and 24 I understand the Highest Common Factor to be 6 but is 1x12 valid making the HCF 12?

A factor of a number is a number that divides it evenly.

So of course 12 is a factor of 12, it divides it.

Now the Highest common factor of two numbers is the highest number that is a factor of both numbers.

By definition, the HCF must be positive and must divide 12, so is less than or equal to 12. The biggest such number is 12, and this divides 24 so yes the HCF is 12.

While is that 1 is a number of himself which you cannot divide but 12 can be divided how 2 into 12=6
4 into 12=3
then 6 divide by 3=2
3*2=6
6 is now the highest common factor.While is that 1 is a number of himself which you cannot divide but 12 can be divided how 2 into 12=6
4 into 12=3
then 6 divide by 3=2
3*2=6
6 is now the highest common factor.

Yes, the number can be the factor of itself.
For eg: the factor of 12 are 1,2,3,4,6,12
12 is multiplied by 1 so it gives us 12. therefore 12 is also a factor.

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