Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 782 and 788 the smallest integer that is 308108 that is divisible by both numbers.
Least Common Multiple (LCM) of 782 and 788 is 308108.
LCM(782,788) = 308108
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 782 and 788. First we will calculate the prime factors of 782 and 788.
Prime Factorization of 782
2 | 782 |
17 | 391 |
23 | 23 |
1 |
Prime factors of 782 are 2, 17,23. Prime factorization of 782 in exponential form is:
782 = 21×171×231
Prime Factorization of 788
2 | 788 |
2 | 394 |
197 | 197 |
1 |
Prime factors of 788 are 2,197. Prime factorization of 788 in exponential form is:
788 = 22×1971
Now multiplying the highest exponent prime factors to calculate the LCM of 782 and 788.
LCM(782,788) = 22×171×231×1971
LCM(782,788) = 308108
Factors of 782
List of positive integer factors of 782 that divides 782 without a remainder.
1, 2, 17, 23, 34, 46, 391, 782
Factors of 788
List of positive integer factors of 788 that divides 788 without a remainder.
1, 2, 4, 197, 394, 788
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 782 and 788, than apply into the LCM equation.
GCF(782,788) = 2
LCM(782,788) = ( 782 × 788) / 2
LCM(782,788) = 616216 / 2
LCM(782,788) = 308108
(i) The LCM of 788 and 782 is associative
LCM of 782 and 788 = LCM of 788 and 782
1. What is the LCM of 782 and 788?
Answer: LCM of 782 and 788 is 308108.
2. What are the Factors of 782?
Answer: Factors of 782 are 1, 2, 17, 23, 34, 46, 391, 782. There are 8 integers that are factors of 782. The greatest factor of 782 is 782.
3. What are the Factors of 788?
Answer: Factors of 788 are 1, 2, 4, 197, 394, 788. There are 6 integers that are factors of 788. The greatest factor of 788 is 788.
4. How to Find the LCM of 782 and 788?
Answer:
Least Common Multiple of 782 and 788 = 308108
Step 1: Find the prime factorization of 782
782 = 2 x 17 x 23
Step 2: Find the prime factorization of 788
788 = 2 x 2 x 197
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 308108 = 2 x 2 x 17 x 23 x 197
Step 4: Therefore, the least common multiple of 782 and 788 is 308108.