Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 972, 980 i.e. 4 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 972 and 980 is 4.
GCF(972,980) = 4
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 972
2 | 972 |
2 | 486 |
3 | 243 |
3 | 81 |
3 | 27 |
3 | 9 |
3 | 3 |
1 |
Prime factors of 972 are 2,3. Prime factorization of 972 in exponential form is:
972 = 22×35
Prime Factorization of 980
2 | 980 |
2 | 490 |
5 | 245 |
7 | 49 |
7 | 7 |
1 |
Prime factors of 980 are 2,5,7. Prime factorization of 980 in exponential form is:
980 = 22×51×72
∴ So by taking common prime factors GCF of 972 and 980 is 4
Factors of 972
List of positive integer factors of 972 that divides 972 without a remainder.
1,2,3,4,6,9,12,18,27,36,54,81,108,162,243,324,486,972
Factors of 980
List of positive integer factors of 980 that divides 980 without a remainder.
1,2,4,5,7,10,14,20,28,35,49,70,98,140,196,245,490,980
Greatest Common Factor
We found the factors and prime factorization of 972 and 980. The biggest common factor number is the GCF number.
So the greatest common factor 972 and 980 is 4.
Also check out the Least Common Multiple of 972 and 980
(i) The GCF of 972 and 980 is associative
GCF of 972 and 980 = GCF of 980 and 972
1. What is the GCF of 972 and 980?
Answer: GCF of 972 and 980 is 4.
2. What are the Factors of 972?
Answer: Factors of 972 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972. There are 18 integers that are factors of 972. The greatest factor of 972 is 972.
3. What are the Factors of 980?
Answer: Factors of 980 are 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980. There are 18 integers that are factors of 980. The greatest factor of 980 is 980.
4. How to Find the GCF of 972 and 980?
Answer:
Greatest Common Factor of 972 and 980 = 4
Step 1: Find the prime factorization of 972
972 = 2 x 2 x 3 x 3 x 3 x 3 x 3
Step 2: Find the prime factorization of 980
980 = 2 x 2 x 5 x 7 x 7
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 2 x 2 = 4
Step 4: Therefore, the greatest common factor of 972 and 980 is 4