Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1740 and 1748 the smallest integer that is 760380 that is divisible by both numbers.
Least Common Multiple (LCM) of 1740 and 1748 is 760380.
LCM(1740,1748) = 760380
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 1740 and 1748. First we will calculate the prime factors of 1740 and 1748.
Prime Factorization of 1740
2 | 1740 |
2 | 870 |
3 | 435 |
5 | 145 |
29 | 29 |
1 |
Prime factors of 1740 are 2, 3, 5,29. Prime factorization of 1740 in exponential form is:
1740 = 22×31×51×291
Prime Factorization of 1748
2 | 1748 |
2 | 874 |
19 | 437 |
23 | 23 |
1 |
Prime factors of 1748 are 2, 19,23. Prime factorization of 1748 in exponential form is:
1748 = 22×191×231
Now multiplying the highest exponent prime factors to calculate the LCM of 1740 and 1748.
LCM(1740,1748) = 22×31×51×191×231×291
LCM(1740,1748) = 760380
Factors of 1740
List of positive integer factors of 1740 that divides 1740 without a remainder.
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740
Factors of 1748
List of positive integer factors of 1748 that divides 1748 without a remainder.
1, 2, 4, 19, 23, 38, 46, 76, 92, 437, 874, 1748
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1740 and 1748, than apply into the LCM equation.
GCF(1740,1748) = 4
LCM(1740,1748) = ( 1740 × 1748) / 4
LCM(1740,1748) = 3041520 / 4
LCM(1740,1748) = 760380
(i) The LCM of 1748 and 1740 is associative
LCM of 1740 and 1748 = LCM of 1748 and 1740
1. What is the LCM of 1740 and 1748?
Answer: LCM of 1740 and 1748 is 760380.
2. What are the Factors of 1740?
Answer: Factors of 1740 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740. There are 24 integers that are factors of 1740. The greatest factor of 1740 is 1740.
3. What are the Factors of 1748?
Answer: Factors of 1748 are 1, 2, 4, 19, 23, 38, 46, 76, 92, 437, 874, 1748. There are 12 integers that are factors of 1748. The greatest factor of 1748 is 1748.
4. How to Find the LCM of 1740 and 1748?
Answer:
Least Common Multiple of 1740 and 1748 = 760380
Step 1: Find the prime factorization of 1740
1740 = 2 x 2 x 3 x 5 x 29
Step 2: Find the prime factorization of 1748
1748 = 2 x 2 x 19 x 23
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 760380 = 2 x 2 x 3 x 5 x 19 x 23 x 29
Step 4: Therefore, the least common multiple of 1740 and 1748 is 760380.