Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1931 and 1939 the smallest integer that is 3744209 that is divisible by both numbers.
Least Common Multiple (LCM) of 1931 and 1939 is 3744209.
LCM(1931,1939) = 3744209
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 1931 and 1939. First we will calculate the prime factors of 1931 and 1939.
Prime Factorization of 1931
1931 | 1931 |
1 |
Prime factors of 1931 are 1931. Prime factorization of 1931 in exponential form is:
1931 = 19311
Prime Factorization of 1939
7 | 1939 |
277 | 277 |
1 |
Prime factors of 1939 are 7,277. Prime factorization of 1939 in exponential form is:
1939 = 71×2771
Now multiplying the highest exponent prime factors to calculate the LCM of 1931 and 1939.
LCM(1931,1939) = 71×2771×19311
LCM(1931,1939) = 3744209
Factors of 1931
List of positive integer factors of 1931 that divides 1931 without a remainder.
1, 1931
Factors of 1939
List of positive integer factors of 1939 that divides 1939 without a remainder.
1, 7, 277, 1939
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1931 and 1939, than apply into the LCM equation.
GCF(1931,1939) = 1
LCM(1931,1939) = ( 1931 × 1939) / 1
LCM(1931,1939) = 3744209 / 1
LCM(1931,1939) = 3744209
(i) The LCM of 1939 and 1931 is associative
LCM of 1931 and 1939 = LCM of 1939 and 1931
1. What is the LCM of 1931 and 1939?
Answer: LCM of 1931 and 1939 is 3744209.
2. What are the Factors of 1931?
Answer: Factors of 1931 are 1, 1931. There are 2 integers that are factors of 1931. The greatest factor of 1931 is 1931.
3. What are the Factors of 1939?
Answer: Factors of 1939 are 1, 7, 277, 1939. There are 4 integers that are factors of 1939. The greatest factor of 1939 is 1939.
4. How to Find the LCM of 1931 and 1939?
Answer:
Least Common Multiple of 1931 and 1939 = 3744209
Step 1: Find the prime factorization of 1931
1931 = 1931
Step 2: Find the prime factorization of 1939
1939 = 7 x 277
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 3744209 = 7 x 277 x 1931
Step 4: Therefore, the least common multiple of 1931 and 1939 is 3744209.