**16**.

What is the greatest common factor of 17 and 15?

**what is the gcf of 8 and 12**.

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The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 48 and the factors of **13** are 1, 13. 48 and 13 have only one common factor which is 1. This implies that 48 and 13 are co-prime. Hence, the Greatest Common Factor (GCF) of 48 and 13 is 1.

The factors for 16 are 1, 2, 4, 8, 16. The two numbers (12 and 16) share common factors (1, 2, 4). The greatest of these is **4** and that is the greatest common factor.

The common factors for 16,24,48 16 , 24 , 48 are **−8,−4,−2,−1,1,2,4,8 – 8 , – 4 , – 2 , – 1 , 1 , 2 , 4 , 8** .

What is the LCM of 16 and 48? The LCM of 16 and 48 is **48**.

The GCF of 16 and 100 is **4**.

1. | GCF of 28 and 48 |
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2. | List of Methods |

3. | Solved Examples |

4. | FAQs |

Answer: GCF of 48 and 64 is **16**.

Answer: GCF of 16 and 28 is **4**.

Answer: GCF of 16 and 20 is **4**.

What is the highest common factor of 16 and 48? Factors of 16 are 1, 2, 4, 8 and 16. Factors of 48 are **1, 2, 3, 4, 6, 8, 12, 16, 24 and 48**. So the highest common factor of 16 and 48 is 16.

As you can see when you list out the factors of each number, **8** is the greatest number that 16 and 24 divides into.

LCM of 16 and 24 by Listing Multiples Step 2: The common multiples from the multiples of 16 and 24 are 48, 96, . . . Step 3: The smallest common multiple of 16 and **24 is 48**.

The GCF of 12 and 16 is **4**. To calculate the greatest common factor of 12 and 16, we need to factor each number (factors of 12 = 1, 2, 3, 4, 6, 12; factors of 16 = 1, 2, 4, 8, 16) and choose the greatest factor that exactly divides both 12 and 16, i.e., 4.

Answer: GCF of 24 and **48 is 24**.

GCF of 12 and 48 by Listing Common Factors There are 6 common factors of 12 and 48, that are 1, 2, 3, 4, 6, and 12. Therefore, the greatest common factor of 12 and **48 is 12**.

The GCF of 6 and 48 is **6**.

Answer: GCF of 16 and 18 is **2**.

Answer: GCF of 45 and 60 is **15**.

GCF of 18 and 48 by Listing Common Factors Therefore, the greatest common factor of 18 and 48 is **6**.

Answer: GCF of 32 and 48 is **16**.

As you can see when you list out the factors of each number, **2** is the greatest number that 16, 28, and 42 divides into.

To find the GCF of a set of numbers, **list all the factors of each number**. The greatest factor appearing on every list is the GCF. For example, to find the GCF of 6 and 15, first list all the factors of each number. Because 3 is the greatest factor that appears on both lists, 3 is the GCF of 6 and 15.

As you can see when you list out the factors of each number, **16** is the greatest number that 48 and 64 divides into.

The biggest common factor number is the GCF number. So the Greatest Common Factor 48, 64, 16 is **16**.

As you can see when you list out the factors of each number, **7** is the greatest number that 42 and 49 divides into.

Answer: GCF of 21 and 49 is **7**.

Therefore, the highest common factor of 18 and 45 is **9**.

The GCF of 8 and **16 is 8**.

Answer: GCF of 14 and 16 is **2**.

The factors of 36 and 40 are **1, 2, 3, 4, 6, 9, 12, 18, 36 and 1, 2, 4, 5, 8, 10, 20, 40** respectively. There are 3 commonly used methods to find the GCF of 36 and 40 – long division, Euclidean algorithm, and prime factorization.

Therefore, the factors of 16 are 1, 2, 4, 8, and 16 and the prime factorization of 16 is 16 **= 2 × 2 × 2 × 2**.

The GCF of 16 and **32 is 16**.

The greatest common factor of 16, 24, and 40 is **8**.

Hence, the GCF of 30 and 48 is **2 × 3 = 6**.

GCF of 48 and 56 by Listing Common Factors There are 4 common factors of 48 and 56, that are **8**, 1, 2, and 4. Therefore, the greatest common factor of 48 and 56 is 8.

Multiples of 16 are: 16, 32, **48**, 64, The lowest (or smallest multiple is 48. There is also another method to find the lcm based on primes factorization.

The multiples of 16 are **16, 32, 48, 64, 80, 96, 112, 128, 144, 160**,… Hence the common multiples of 12 and 16 are 48, 96, 144,… and their LCM is 48.

As you can see when you list out the factors of each number, **2** is the greatest number that 16, 48, 72, and 74 divides into.

The greatest common factor of 24, 36, and 48 is **12**.

Answer: GCF of 18 and 30 is **6**.