Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7882 and 7890 the smallest integer that is 31094490 that is divisible by both numbers.
Least Common Multiple (LCM) of 7882 and 7890 is 31094490.
LCM(7882,7890) = 31094490
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 7882 and 7890. First we will calculate the prime factors of 7882 and 7890.
Prime Factorization of 7882
2 | 7882 |
7 | 3941 |
563 | 563 |
1 |
Prime factors of 7882 are 2, 7,563. Prime factorization of 7882 in exponential form is:
7882 = 21×71×5631
Prime Factorization of 7890
2 | 7890 |
3 | 3945 |
5 | 1315 |
263 | 263 |
1 |
Prime factors of 7890 are 2, 3, 5,263. Prime factorization of 7890 in exponential form is:
7890 = 21×31×51×2631
Now multiplying the highest exponent prime factors to calculate the LCM of 7882 and 7890.
LCM(7882,7890) = 21×31×51×71×2631×5631
LCM(7882,7890) = 31094490
Factors of 7882
List of positive integer factors of 7882 that divides 7882 without a remainder.
1, 2, 7, 14, 563, 1126, 3941, 7882
Factors of 7890
List of positive integer factors of 7890 that divides 7890 without a remainder.
1, 2, 3, 5, 6, 10, 15, 30, 263, 526, 789, 1315, 1578, 2630, 3945, 7890
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7882 and 7890, than apply into the LCM equation.
GCF(7882,7890) = 2
LCM(7882,7890) = ( 7882 × 7890) / 2
LCM(7882,7890) = 62188980 / 2
LCM(7882,7890) = 31094490
(i) The LCM of 7890 and 7882 is associative
LCM of 7882 and 7890 = LCM of 7890 and 7882
1. What is the LCM of 7882 and 7890?
Answer: LCM of 7882 and 7890 is 31094490.
2. What are the Factors of 7882?
Answer: Factors of 7882 are 1, 2, 7, 14, 563, 1126, 3941, 7882. There are 8 integers that are factors of 7882. The greatest factor of 7882 is 7882.
3. What are the Factors of 7890?
Answer: Factors of 7890 are 1, 2, 3, 5, 6, 10, 15, 30, 263, 526, 789, 1315, 1578, 2630, 3945, 7890. There are 16 integers that are factors of 7890. The greatest factor of 7890 is 7890.
4. How to Find the LCM of 7882 and 7890?
Answer:
Least Common Multiple of 7882 and 7890 = 31094490
Step 1: Find the prime factorization of 7882
7882 = 2 x 7 x 563
Step 2: Find the prime factorization of 7890
7890 = 2 x 3 x 5 x 263
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 31094490 = 2 x 3 x 5 x 7 x 263 x 563
Step 4: Therefore, the least common multiple of 7882 and 7890 is 31094490.