Greatest Common Factor of 45, 18, 840

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

• Greatest Common Factor of 45, 18, 840 by common division method
• Greatest Common Factor of 45, 18, 840 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ So the GCF of the given numbers is 3 = 3

Factors of 45

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

1,3,5,9,15,45

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 840

List of positive integer factors of 840 that divides 840 without a remainder.

1,2,3,4,5,6,7,8,10,12,14,15,20,21,24,28,30,35,40,42,56,60,70,84,105,120,140,168,210,280,420,840

Greatest Common Factor

We found the factors 45,18,840 . The biggest common factor number is the GCF number.
So the greatest common factor 45,18,840 is 3.

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

• GCF of 64, 19, 199
• GCF of 96, 17, 767
• GCF of 85, 64, 217
• GCF of 33, 22, 659
• GCF of 63, 42, 842

1. What is the GCF of 45, 18, 840?

Answer: GCF of 45, 18, 840 is 3.

2. How to Find the GCF of 45, 18, 840

Answer: Greatest Common Factor(GCF) of 45, 18, 840 = 3

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

Step 2: Then multiply all the prime factors GCF(45, 18, 840) = 3.