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What is the greatest common factor of 70 and 216?

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You have reached us maybe looking for answers to the questions like: What is the greatest common factor of 70 and 216? or what is the highest common factor (HCF) of 70 and 216?

What is the GCF of 70 and 216?

The first step to find the gcf of 70 and 216 is to list the factors of each number. The factors of 70 are 1, 2, 5, 7, 10, 14, 35 and 70. The factors of 216 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108 and 216. So, the Greatest Common Factor for these numbers is 2 because it divides all them without a remainder. Read more about Common Factors below.

How to find the Greatest Common Factor

GCF example:

The first step is to find all divisors of each number. For instance, let us find the gcf(70,216).

In this case we have:

  • The factors of 70 (all the whole numbers that can divide the number without a remainder) are 1, 2, 5, 7, 10, 14, 35 and 70;
  • The factors of 216 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108 and 216.

The second step is to analyze which are the common divisors. It is not difficult to see that the 'Greatest Common Factor' or 'Divisor' for 70 and 216 is 2. The GCF is the largest common positive integer that divides all the numbers (70,216) without a remainder.

The GCF is also known as:

  • Greatest common divisor (gcd);
  • Highest common factor (hcf);
  • Greatest common measure (gcm), or
  • Highest common divisor

Greatest Common Factor Calculator

Greatest Common Factor Calculator

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