Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 32 and 49 the smallest integer that is 1568 that is divisible by both numbers.
Least Common Multiple (LCM) of 32 and 49 is 1568.
LCM(32,49) = 1568
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 32 and 49. First we will calculate the prime factors of 32 and 49.
Prime Factorization of 32
2 | 32 |
2 | 16 |
2 | 8 |
2 | 4 |
2 | 2 |
1 |
Prime factors of 32 are 2. Prime factorization of 32 in exponential form is:
32 = 25
Prime Factorization of 49
7 | 49 |
7 | 7 |
1 |
Prime factors of 49 are 7. Prime factorization of 49 in exponential form is:
49 = 72
Now multiplying the highest exponent prime factors to calculate the LCM of 32 and 49.
LCM(32,49) = 25×72
LCM(32,49) = 1568
Factors of 32
List of positive integer factors of 32 that divides 32 without a remainder.
1, 2, 4, 8, 16, 32
Factors of 49
List of positive integer factors of 49 that divides 49 without a remainder.
1, 7, 49
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 32 and 49, than apply into the LCM equation.
GCF(32,49) = 1
LCM(32,49) = ( 32 × 49) / 1
LCM(32,49) = 1568 / 1
LCM(32,49) = 1568
(i) The LCM of 49 and 32 is associative
LCM of 32 and 49 = LCM of 49 and 32
1. What is the LCM of 32 and 49?
Answer: LCM of 32 and 49 is 1568.
2. What are the Factors of 32?
Answer: Factors of 32 are 1, 2, 4, 8, 16, 32. There are 6 integers that are factors of 32. The greatest factor of 32 is 32.
3. What are the Factors of 49?
Answer: Factors of 49 are 1, 7, 49. There are 3 integers that are factors of 49. The greatest factor of 49 is 49.
4. How to Find the LCM of 32 and 49?
Answer:
Least Common Multiple of 32 and 49 = 1568
Step 1: Find the prime factorization of 32
32 = 2 x 2 x 2 x 2 x 2
Step 2: Find the prime factorization of 49
49 = 7 x 7
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1568 = 2 x 2 x 2 x 2 x 2 x 7 x 7
Step 4: Therefore, the least common multiple of 32 and 49 is 1568.