Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2860 and 2865 the smallest integer that is 1638780 that is divisible by both numbers.
Least Common Multiple (LCM) of 2860 and 2865 is 1638780.
LCM(2860,2865) = 1638780
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 2860 and 2865. First we will calculate the prime factors of 2860 and 2865.
Prime Factorization of 2860
2 | 2860 |
2 | 1430 |
5 | 715 |
11 | 143 |
13 | 13 |
1 |
Prime factors of 2860 are 2, 5, 11,13. Prime factorization of 2860 in exponential form is:
2860 = 22×51×111×131
Prime Factorization of 2865
3 | 2865 |
5 | 955 |
191 | 191 |
1 |
Prime factors of 2865 are 3, 5,191. Prime factorization of 2865 in exponential form is:
2865 = 31×51×1911
Now multiplying the highest exponent prime factors to calculate the LCM of 2860 and 2865.
LCM(2860,2865) = 22×31×51×111×131×1911
LCM(2860,2865) = 1638780
Factors of 2860
List of positive integer factors of 2860 that divides 2860 without a remainder.
1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860
Factors of 2865
List of positive integer factors of 2865 that divides 2865 without a remainder.
1, 3, 5, 15, 191, 573, 955, 2865
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2860 and 2865, than apply into the LCM equation.
GCF(2860,2865) = 5
LCM(2860,2865) = ( 2860 × 2865) / 5
LCM(2860,2865) = 8193900 / 5
LCM(2860,2865) = 1638780
(i) The LCM of 2865 and 2860 is associative
LCM of 2860 and 2865 = LCM of 2865 and 2860
1. What is the LCM of 2860 and 2865?
Answer: LCM of 2860 and 2865 is 1638780.
2. What are the Factors of 2860?
Answer: Factors of 2860 are 1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860. There are 24 integers that are factors of 2860. The greatest factor of 2860 is 2860.
3. What are the Factors of 2865?
Answer: Factors of 2865 are 1, 3, 5, 15, 191, 573, 955, 2865. There are 8 integers that are factors of 2865. The greatest factor of 2865 is 2865.
4. How to Find the LCM of 2860 and 2865?
Answer:
Least Common Multiple of 2860 and 2865 = 1638780
Step 1: Find the prime factorization of 2860
2860 = 2 x 2 x 5 x 11 x 13
Step 2: Find the prime factorization of 2865
2865 = 3 x 5 x 191
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1638780 = 2 x 2 x 3 x 5 x 11 x 13 x 191
Step 4: Therefore, the least common multiple of 2860 and 2865 is 1638780.