Greatest Common Factor of 10, 20, 55, 40, 45

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 10, 20, 55, 40, 45 by common division method
• Greatest Common Factor of 10, 20, 55, 40, 45 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 5 = 5

Factors of 10

List of positive integer factors of 10 that divides 10 without a remainder.

1,2,5,10

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 40

List of positive integer factors of 40 that divides 40 without a remainder.

1,2,4,5,8,10,20,40

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Greatest Common Factor

We found the factors 10,20,55,40,45 . The biggest common factor number is the GCF number.
So the greatest common factor 10,20,55,40,45 is 5.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 61, 86, 98, 74, 36
• GCF of 72, 21, 96, 81, 15
• GCF of 91, 52, 23, 71, 62
• GCF of 55, 74, 40, 83, 18
• GCF of 25, 46, 17, 40, 42

1. What is the GCF of 10, 20, 55, 40, 45?

Answer: GCF of 10, 20, 55, 40, 45 is 5.

2. How to Find the GCF of 10, 20, 55, 40, 45

Answer: Greatest Common Factor(GCF) of 10, 20, 55, 40, 45 = 5

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(10, 20, 55, 40, 45) = 5.