Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 740 and 742 the smallest integer that is 274540 that is divisible by both numbers.
Least Common Multiple (LCM) of 740 and 742 is 274540.
LCM(740,742) = 274540
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 740 and 742. First we will calculate the prime factors of 740 and 742.
Prime Factorization of 740
2 | 740 |
2 | 370 |
5 | 185 |
37 | 37 |
1 |
Prime factors of 740 are 2, 5,37. Prime factorization of 740 in exponential form is:
740 = 22×51×371
Prime Factorization of 742
2 | 742 |
7 | 371 |
53 | 53 |
1 |
Prime factors of 742 are 2, 7,53. Prime factorization of 742 in exponential form is:
742 = 21×71×531
Now multiplying the highest exponent prime factors to calculate the LCM of 740 and 742.
LCM(740,742) = 22×51×71×371×531
LCM(740,742) = 274540
Factors of 740
List of positive integer factors of 740 that divides 740 without a remainder.
1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740
Factors of 742
List of positive integer factors of 742 that divides 742 without a remainder.
1, 2, 7, 14, 53, 106, 371, 742
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 740 and 742, than apply into the LCM equation.
GCF(740,742) = 2
LCM(740,742) = ( 740 × 742) / 2
LCM(740,742) = 549080 / 2
LCM(740,742) = 274540
(i) The LCM of 742 and 740 is associative
LCM of 740 and 742 = LCM of 742 and 740
1. What is the LCM of 740 and 742?
Answer: LCM of 740 and 742 is 274540.
2. What are the Factors of 740?
Answer: Factors of 740 are 1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740. There are 12 integers that are factors of 740. The greatest factor of 740 is 740.
3. What are the Factors of 742?
Answer: Factors of 742 are 1, 2, 7, 14, 53, 106, 371, 742. There are 8 integers that are factors of 742. The greatest factor of 742 is 742.
4. How to Find the LCM of 740 and 742?
Answer:
Least Common Multiple of 740 and 742 = 274540
Step 1: Find the prime factorization of 740
740 = 2 x 2 x 5 x 37
Step 2: Find the prime factorization of 742
742 = 2 x 7 x 53
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 274540 = 2 x 2 x 5 x 7 x 37 x 53
Step 4: Therefore, the least common multiple of 740 and 742 is 274540.