Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 870 and 871 the smallest integer that is 757770 that is divisible by both numbers.
Least Common Multiple (LCM) of 870 and 871 is 757770.
LCM(870,871) = 757770
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 870 and 871. First we will calculate the prime factors of 870 and 871.
Prime Factorization of 870
2 | 870 |
3 | 435 |
5 | 145 |
29 | 29 |
1 |
Prime factors of 870 are 2, 3, 5,29. Prime factorization of 870 in exponential form is:
870 = 21×31×51×291
Prime Factorization of 871
13 | 871 |
67 | 67 |
1 |
Prime factors of 871 are 13,67. Prime factorization of 871 in exponential form is:
871 = 131×671
Now multiplying the highest exponent prime factors to calculate the LCM of 870 and 871.
LCM(870,871) = 21×31×51×131×291×671
LCM(870,871) = 757770
Factors of 870
List of positive integer factors of 870 that divides 870 without a remainder.
1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870
Factors of 871
List of positive integer factors of 871 that divides 871 without a remainder.
1, 13, 67, 871
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 870 and 871, than apply into the LCM equation.
GCF(870,871) = 1
LCM(870,871) = ( 870 × 871) / 1
LCM(870,871) = 757770 / 1
LCM(870,871) = 757770
(i) The LCM of 871 and 870 is associative
LCM of 870 and 871 = LCM of 871 and 870
1. What is the LCM of 870 and 871?
Answer: LCM of 870 and 871 is 757770.
2. What are the Factors of 870?
Answer: Factors of 870 are 1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870. There are 16 integers that are factors of 870. The greatest factor of 870 is 870.
3. What are the Factors of 871?
Answer: Factors of 871 are 1, 13, 67, 871. There are 4 integers that are factors of 871. The greatest factor of 871 is 871.
4. How to Find the LCM of 870 and 871?
Answer:
Least Common Multiple of 870 and 871 = 757770
Step 1: Find the prime factorization of 870
870 = 2 x 3 x 5 x 29
Step 2: Find the prime factorization of 871
871 = 13 x 67
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 757770 = 2 x 3 x 5 x 13 x 29 x 67
Step 4: Therefore, the least common multiple of 870 and 871 is 757770.