Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 4940 and 4945 the smallest integer that is 4885660 that is divisible by both numbers.
Least Common Multiple (LCM) of 4940 and 4945 is 4885660.
LCM(4940,4945) = 4885660
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 4940 and 4945. First we will calculate the prime factors of 4940 and 4945.
Prime Factorization of 4940
2 | 4940 |
2 | 2470 |
5 | 1235 |
13 | 247 |
19 | 19 |
1 |
Prime factors of 4940 are 2, 5, 13,19. Prime factorization of 4940 in exponential form is:
4940 = 22×51×131×191
Prime Factorization of 4945
5 | 4945 |
23 | 989 |
43 | 43 |
1 |
Prime factors of 4945 are 5, 23,43. Prime factorization of 4945 in exponential form is:
4945 = 51×231×431
Now multiplying the highest exponent prime factors to calculate the LCM of 4940 and 4945.
LCM(4940,4945) = 22×51×131×191×231×431
LCM(4940,4945) = 4885660
Factors of 4940
List of positive integer factors of 4940 that divides 4940 without a remainder.
1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940
Factors of 4945
List of positive integer factors of 4945 that divides 4945 without a remainder.
1, 5, 23, 43, 115, 215, 989, 4945
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 4940 and 4945, than apply into the LCM equation.
GCF(4940,4945) = 5
LCM(4940,4945) = ( 4940 × 4945) / 5
LCM(4940,4945) = 24428300 / 5
LCM(4940,4945) = 4885660
(i) The LCM of 4945 and 4940 is associative
LCM of 4940 and 4945 = LCM of 4945 and 4940
1. What is the LCM of 4940 and 4945?
Answer: LCM of 4940 and 4945 is 4885660.
2. What are the Factors of 4940?
Answer: Factors of 4940 are 1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940. There are 24 integers that are factors of 4940. The greatest factor of 4940 is 4940.
3. What are the Factors of 4945?
Answer: Factors of 4945 are 1, 5, 23, 43, 115, 215, 989, 4945. There are 8 integers that are factors of 4945. The greatest factor of 4945 is 4945.
4. How to Find the LCM of 4940 and 4945?
Answer:
Least Common Multiple of 4940 and 4945 = 4885660
Step 1: Find the prime factorization of 4940
4940 = 2 x 2 x 5 x 13 x 19
Step 2: Find the prime factorization of 4945
4945 = 5 x 23 x 43
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 4885660 = 2 x 2 x 5 x 13 x 19 x 23 x 43
Step 4: Therefore, the least common multiple of 4940 and 4945 is 4885660.