No, 42 is not a perfect number. In general, we determine if a number, x, is a perfect number using the following steps: Find the divisors of x. Find…

What is the prime factor of 42?

The only way to write 42 as the product of primes (except to change the order of the factors) is 2 × 3 × 7. We call 2 × 3 × 7 the prime factorization of 42.

What is the greatest common factor of 42 and 15?

The Greatest Common Factor (GCF) for 15 and 42, notation CGF(15,42), is 3.

What is the GCF of 30 18?

6

What is the GCF of 36 and 63?

We found the factors and prime factorization of 36 and 63. The biggest common factor number is the GCF number. So the greatest common factor 36 and 63 is 9.

What is the HCF of 36 63?

9

What is the GCF of 36 and 42?

Greatest common factor (GCF) of 36 and 42 is 6. We will now calculate the prime factors of 36 and 42, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 36 and 42.

What is the GCF of 36 63 and 72?

We found the factors and prime factorization of 63 and 72. The biggest common factor number is the GCF number. So the greatest common factor 63 and 72 is 9.

What is the HCF of 72 and 36?

The biggest common factor number is the GCF number. So the greatest common factor 36 and 72 is 36.

What is the HCF of 63 and 72?

What is the HCF of 36 and 18?

The prime factors and multiplicities 18 and 36 have in common are: 2 x 3 x 3. 2 x 3 x 3 is the gcf of 18 and 36. gcf(18,36) = 18.

What is the HCF of 24 and 36?

12

What is the GCF of 32?

Answer: Factors of 32 are 1, 2, 4, 8, 16, 32. There are 6 integers that are factors of 32. The greatest factor of 32 is 32. 3.

What is the GCF of 60?

The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72. The common factors of both numbers are 1, 2, 3, 4, 6, and 12. Which means that 12 is the greatest common factors.

What is the GCF of 36?

1, 2, 3, 4, 6, 9, 12, 18, and 36. 1, 2, 3, 6, 9, 18, 27, and 54. Although the numbers in bold are all common factors of both 36 and 54, 18 is the greatest common factor. The second method to find the greatest common factor is to list the prime factors, then multiply the common prime factors.