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 862 the smallest integer that is 368936 that is divisible by both numbers.
Least Common Multiple (LCM) of 856 and 862 is 368936.
LCM(856,862) = 368936
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 862. First we will calculate the prime factors of 856 and 862.
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 862
2 | 862 |
431 | 431 |
1 |
Prime factors of 862 are 2,431. Prime factorization of 862 in exponential form is:
862 = 21×4311
Now multiplying the highest exponent prime factors to calculate the LCM of 856 and 862.
LCM(856,862) = 23×1071×4311
LCM(856,862) = 368936
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 862
List of positive integer factors of 862 that divides 862 without a remainder.
1, 2, 431, 862
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 856 and 862, than apply into the LCM equation.
GCF(856,862) = 2
LCM(856,862) = ( 856 × 862) / 2
LCM(856,862) = 737872 / 2
LCM(856,862) = 368936
(i) The LCM of 862 and 856 is associative
LCM of 856 and 862 = LCM of 862 and 856
1. What is the LCM of 856 and 862?
Answer: LCM of 856 and 862 is 368936.
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 862?
Answer: Factors of 862 are 1, 2, 431, 862. There are 4 integers that are factors of 862. The greatest factor of 862 is 862.
4. How to Find the LCM of 856 and 862?
Answer:
Least Common Multiple of 856 and 862 = 368936
Step 1: Find the prime factorization of 856
856 = 2 x 2 x 2 x 107
Step 2: Find the prime factorization of 862
862 = 2 x 431
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 368936 = 2 x 2 x 2 x 107 x 431
Step 4: Therefore, the least common multiple of 856 and 862 is 368936.