Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 628 and 634 the smallest integer that is 199076 that is divisible by both numbers.
Least Common Multiple (LCM) of 628 and 634 is 199076.
LCM(628,634) = 199076
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 628 and 634. First we will calculate the prime factors of 628 and 634.
Prime Factorization of 628
2 | 628 |
2 | 314 |
157 | 157 |
1 |
Prime factors of 628 are 2,157. Prime factorization of 628 in exponential form is:
628 = 22×1571
Prime Factorization of 634
2 | 634 |
317 | 317 |
1 |
Prime factors of 634 are 2,317. Prime factorization of 634 in exponential form is:
634 = 21×3171
Now multiplying the highest exponent prime factors to calculate the LCM of 628 and 634.
LCM(628,634) = 22×1571×3171
LCM(628,634) = 199076
Factors of 628
List of positive integer factors of 628 that divides 628 without a remainder.
1, 2, 4, 157, 314, 628
Factors of 634
List of positive integer factors of 634 that divides 634 without a remainder.
1, 2, 317, 634
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 628 and 634, than apply into the LCM equation.
GCF(628,634) = 2
LCM(628,634) = ( 628 × 634) / 2
LCM(628,634) = 398152 / 2
LCM(628,634) = 199076
(i) The LCM of 634 and 628 is associative
LCM of 628 and 634 = LCM of 634 and 628
1. What is the LCM of 628 and 634?
Answer: LCM of 628 and 634 is 199076.
2. What are the Factors of 628?
Answer: Factors of 628 are 1, 2, 4, 157, 314, 628. There are 6 integers that are factors of 628. The greatest factor of 628 is 628.
3. What are the Factors of 634?
Answer: Factors of 634 are 1, 2, 317, 634. There are 4 integers that are factors of 634. The greatest factor of 634 is 634.
4. How to Find the LCM of 628 and 634?
Answer:
Least Common Multiple of 628 and 634 = 199076
Step 1: Find the prime factorization of 628
628 = 2 x 2 x 157
Step 2: Find the prime factorization of 634
634 = 2 x 317
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 199076 = 2 x 2 x 157 x 317
Step 4: Therefore, the least common multiple of 628 and 634 is 199076.