Q: What is the greatest common factor of the numbers 30 and 40?

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60.

The greatest common factor of 60, 45, 30 would be 15. This is because all these numbers easily divide by 15. 60/15=4 45/15=3 30/15=2 Although these numbers are also all divisible by 5, 15 is greater than 5 making it the greatest common factor

greatest common factor is 15 greatest common prime factor is 5 Least common multiple is 30

The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.The greatest common factor of 30, 45, and 60105 is 15

5,10,15 6,12,18the above is true if you wanted the multiples of the numbers separately. If you were looking for the three first COMMON multiples of the numbers, they are...30, 60, 90.The first (or least common) multiple of two numbers is also equal to the product of the two numbers divided by the greatest common factor of the numbers. Since 5 is prime, and 6 is NOT a multiple of 5, then the greatest common factor is 1. Thus, the least common multiple is 30.To find the second multiple, take the first times 2, for the third, take the first times 3, etc......

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20 and 30 are two numbers that have the greatest common factor of 10.

The greatest common factor of the numbers 18, 30 and 72 is 6.

The greatest common factor of the numbers 14 and 30 is 2.

The highest common factor of the numbers 40 and 30 is 10.

The greatest common factor of the given numbers is 15

The highest common factor of the numbers 30, 60 and 72 is 6.

Short answer: There are none. There is neither a greatest common factor nor common factors of a single number, such as 30, because there cannot be any form of common factor without two or more numbers to compare. Common factors are factors that the numbers being compared have in common. The greatest common factor is the largest factor that all the numbers being compared have in common. Thus, since there are not two or more numbers to compare, there are neither common factors nor a greatest common factor. The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. Examples: The common factors of 30 and 32 are 1 and 2; the greatest common factor is 2. The common factors of 30 and 45 are 1, 3, 5, and 15; the greatest common factor is 15. The common factors of 30 and 57 are 1 and 3; the greatest common factor is 3. The common factors of 30 and 65 are 1 and 5; the greatest common factor is 5. The common factors of 30 and 72 are 1, 2, 3, and 6; the greatest common factor is 6. The common factors of 30 and 100 are 1, 2, 5, and 10; the greatest common factor is 10. The common factors of 30 and 180 are 1, 2, 3, 5, 6, 10, 15, and 30; the greatest common factor is 30.

1 is the greatest common factor...something else that they have in common is that they are all two digit numbers.

15 and 30

12 and 30

15 and 15000 have a greatest common factor of 15

The greatest common factor of the numbers 54 and 30 is 6.