Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 8720 and 8725 the smallest integer that is 15216400 that is divisible by both numbers.
Least Common Multiple (LCM) of 8720 and 8725 is 15216400.
LCM(8720,8725) = 15216400
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 8720 and 8725. First we will calculate the prime factors of 8720 and 8725.
Prime Factorization of 8720
2 | 8720 |
2 | 4360 |
2 | 2180 |
2 | 1090 |
5 | 545 |
109 | 109 |
1 |
Prime factors of 8720 are 2, 5,109. Prime factorization of 8720 in exponential form is:
8720 = 24×51×1091
Prime Factorization of 8725
5 | 8725 |
5 | 1745 |
349 | 349 |
1 |
Prime factors of 8725 are 5,349. Prime factorization of 8725 in exponential form is:
8725 = 52×3491
Now multiplying the highest exponent prime factors to calculate the LCM of 8720 and 8725.
LCM(8720,8725) = 24×52×1091×3491
LCM(8720,8725) = 15216400
Factors of 8720
List of positive integer factors of 8720 that divides 8720 without a remainder.
1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720
Factors of 8725
List of positive integer factors of 8725 that divides 8725 without a remainder.
1, 5, 25, 349, 1745, 8725
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 8720 and 8725, than apply into the LCM equation.
GCF(8720,8725) = 5
LCM(8720,8725) = ( 8720 × 8725) / 5
LCM(8720,8725) = 76082000 / 5
LCM(8720,8725) = 15216400
(i) The LCM of 8725 and 8720 is associative
LCM of 8720 and 8725 = LCM of 8725 and 8720
1. What is the LCM of 8720 and 8725?
Answer: LCM of 8720 and 8725 is 15216400.
2. What are the Factors of 8720?
Answer: Factors of 8720 are 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720. There are 20 integers that are factors of 8720. The greatest factor of 8720 is 8720.
3. What are the Factors of 8725?
Answer: Factors of 8725 are 1, 5, 25, 349, 1745, 8725. There are 6 integers that are factors of 8725. The greatest factor of 8725 is 8725.
4. How to Find the LCM of 8720 and 8725?
Answer:
Least Common Multiple of 8720 and 8725 = 15216400
Step 1: Find the prime factorization of 8720
8720 = 2 x 2 x 2 x 2 x 5 x 109
Step 2: Find the prime factorization of 8725
8725 = 5 x 5 x 349
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 15216400 = 2 x 2 x 2 x 2 x 5 x 5 x 109 x 349
Step 4: Therefore, the least common multiple of 8720 and 8725 is 15216400.