Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 856 and 860 the smallest integer that is 184040 that is divisible by both numbers.
Least Common Multiple (LCM) of 856 and 860 is 184040.
LCM(856,860) = 184040
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 856 and 860. First we will calculate the prime factors of 856 and 860.
Prime Factorization of 856
2 | 856 |
2 | 428 |
2 | 214 |
107 | 107 |
1 |
Prime factors of 856 are 2,107. Prime factorization of 856 in exponential form is:
856 = 23×1071
Prime Factorization of 860
2 | 860 |
2 | 430 |
5 | 215 |
43 | 43 |
1 |
Prime factors of 860 are 2, 5,43. Prime factorization of 860 in exponential form is:
860 = 22×51×431
Now multiplying the highest exponent prime factors to calculate the LCM of 856 and 860.
LCM(856,860) = 23×51×431×1071
LCM(856,860) = 184040
Factors of 856
List of positive integer factors of 856 that divides 856 without a remainder.
1, 2, 4, 8, 107, 214, 428, 856
Factors of 860
List of positive integer factors of 860 that divides 860 without a remainder.
1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 856 and 860, than apply into the LCM equation.
GCF(856,860) = 4
LCM(856,860) = ( 856 × 860) / 4
LCM(856,860) = 736160 / 4
LCM(856,860) = 184040
(i) The LCM of 860 and 856 is associative
LCM of 856 and 860 = LCM of 860 and 856
1. What is the LCM of 856 and 860?
Answer: LCM of 856 and 860 is 184040.
2. What are the Factors of 856?
Answer: Factors of 856 are 1, 2, 4, 8, 107, 214, 428, 856. There are 8 integers that are factors of 856. The greatest factor of 856 is 856.
3. What are the Factors of 860?
Answer: Factors of 860 are 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860. There are 12 integers that are factors of 860. The greatest factor of 860 is 860.
4. How to Find the LCM of 856 and 860?
Answer:
Least Common Multiple of 856 and 860 = 184040
Step 1: Find the prime factorization of 856
856 = 2 x 2 x 2 x 107
Step 2: Find the prime factorization of 860
860 = 2 x 2 x 5 x 43
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 184040 = 2 x 2 x 2 x 5 x 43 x 107
Step 4: Therefore, the least common multiple of 856 and 860 is 184040.