Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 644 and 652 the smallest integer that is 104972 that is divisible by both numbers.
Least Common Multiple (LCM) of 644 and 652 is 104972.
LCM(644,652) = 104972
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 644 and 652. First we will calculate the prime factors of 644 and 652.
Prime Factorization of 644
2 | 644 |
2 | 322 |
7 | 161 |
23 | 23 |
1 |
Prime factors of 644 are 2, 7,23. Prime factorization of 644 in exponential form is:
644 = 22×71×231
Prime Factorization of 652
2 | 652 |
2 | 326 |
163 | 163 |
1 |
Prime factors of 652 are 2,163. Prime factorization of 652 in exponential form is:
652 = 22×1631
Now multiplying the highest exponent prime factors to calculate the LCM of 644 and 652.
LCM(644,652) = 22×71×231×1631
LCM(644,652) = 104972
Factors of 644
List of positive integer factors of 644 that divides 644 without a remainder.
1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644
Factors of 652
List of positive integer factors of 652 that divides 652 without a remainder.
1, 2, 4, 163, 326, 652
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 644 and 652, than apply into the LCM equation.
GCF(644,652) = 4
LCM(644,652) = ( 644 × 652) / 4
LCM(644,652) = 419888 / 4
LCM(644,652) = 104972
(i) The LCM of 652 and 644 is associative
LCM of 644 and 652 = LCM of 652 and 644
1. What is the LCM of 644 and 652?
Answer: LCM of 644 and 652 is 104972.
2. What are the Factors of 644?
Answer: Factors of 644 are 1, 2, 4, 7, 14, 23, 28, 46, 92, 161, 322, 644. There are 12 integers that are factors of 644. The greatest factor of 644 is 644.
3. What are the Factors of 652?
Answer: Factors of 652 are 1, 2, 4, 163, 326, 652. There are 6 integers that are factors of 652. The greatest factor of 652 is 652.
4. How to Find the LCM of 644 and 652?
Answer:
Least Common Multiple of 644 and 652 = 104972
Step 1: Find the prime factorization of 644
644 = 2 x 2 x 7 x 23
Step 2: Find the prime factorization of 652
652 = 2 x 2 x 163
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 104972 = 2 x 2 x 7 x 23 x 163
Step 4: Therefore, the least common multiple of 644 and 652 is 104972.