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 748 the smallest integer that is 138380 that is divisible by both numbers.
Least Common Multiple (LCM) of 740 and 748 is 138380.
LCM(740,748) = 138380
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 748. First we will calculate the prime factors of 740 and 748.
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 748
2 | 748 |
2 | 374 |
11 | 187 |
17 | 17 |
1 |
Prime factors of 748 are 2, 11,17. Prime factorization of 748 in exponential form is:
748 = 22×111×171
Now multiplying the highest exponent prime factors to calculate the LCM of 740 and 748.
LCM(740,748) = 22×51×111×171×371
LCM(740,748) = 138380
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 748
List of positive integer factors of 748 that divides 748 without a remainder.
1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 374, 748
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 740 and 748, than apply into the LCM equation.
GCF(740,748) = 4
LCM(740,748) = ( 740 × 748) / 4
LCM(740,748) = 553520 / 4
LCM(740,748) = 138380
(i) The LCM of 748 and 740 is associative
LCM of 740 and 748 = LCM of 748 and 740
1. What is the LCM of 740 and 748?
Answer: LCM of 740 and 748 is 138380.
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 748?
Answer: Factors of 748 are 1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 374, 748. There are 12 integers that are factors of 748. The greatest factor of 748 is 748.
4. How to Find the LCM of 740 and 748?
Answer:
Least Common Multiple of 740 and 748 = 138380
Step 1: Find the prime factorization of 740
740 = 2 x 2 x 5 x 37
Step 2: Find the prime factorization of 748
748 = 2 x 2 x 11 x 17
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 138380 = 2 x 2 x 5 x 11 x 17 x 37
Step 4: Therefore, the least common multiple of 740 and 748 is 138380.