Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 8780 and 8781 the smallest integer that is 77097180 that is divisible by both numbers.
Least Common Multiple (LCM) of 8780 and 8781 is 77097180.
LCM(8780,8781) = 77097180
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 8780 and 8781. First we will calculate the prime factors of 8780 and 8781.
Prime Factorization of 8780
2 | 8780 |
2 | 4390 |
5 | 2195 |
439 | 439 |
1 |
Prime factors of 8780 are 2, 5,439. Prime factorization of 8780 in exponential form is:
8780 = 22×51×4391
Prime Factorization of 8781
3 | 8781 |
2927 | 2927 |
1 |
Prime factors of 8781 are 3,2927. Prime factorization of 8781 in exponential form is:
8781 = 31×29271
Now multiplying the highest exponent prime factors to calculate the LCM of 8780 and 8781.
LCM(8780,8781) = 22×31×51×4391×29271
LCM(8780,8781) = 77097180
Factors of 8780
List of positive integer factors of 8780 that divides 8780 without a remainder.
1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 8780
Factors of 8781
List of positive integer factors of 8781 that divides 8781 without a remainder.
1, 3, 2927, 8781
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 8780 and 8781, than apply into the LCM equation.
GCF(8780,8781) = 1
LCM(8780,8781) = ( 8780 × 8781) / 1
LCM(8780,8781) = 77097180 / 1
LCM(8780,8781) = 77097180
(i) The LCM of 8781 and 8780 is associative
LCM of 8780 and 8781 = LCM of 8781 and 8780
1. What is the LCM of 8780 and 8781?
Answer: LCM of 8780 and 8781 is 77097180.
2. What are the Factors of 8780?
Answer: Factors of 8780 are 1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 8780. There are 12 integers that are factors of 8780. The greatest factor of 8780 is 8780.
3. What are the Factors of 8781?
Answer: Factors of 8781 are 1, 3, 2927, 8781. There are 4 integers that are factors of 8781. The greatest factor of 8781 is 8781.
4. How to Find the LCM of 8780 and 8781?
Answer:
Least Common Multiple of 8780 and 8781 = 77097180
Step 1: Find the prime factorization of 8780
8780 = 2 x 2 x 5 x 439
Step 2: Find the prime factorization of 8781
8781 = 3 x 2927
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 77097180 = 2 x 2 x 3 x 5 x 439 x 2927
Step 4: Therefore, the least common multiple of 8780 and 8781 is 77097180.