Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7212 and 7220 the smallest integer that is 13017660 that is divisible by both numbers.
Least Common Multiple (LCM) of 7212 and 7220 is 13017660.
LCM(7212,7220) = 13017660
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 7212 and 7220. First we will calculate the prime factors of 7212 and 7220.
Prime Factorization of 7212
2 | 7212 |
2 | 3606 |
3 | 1803 |
601 | 601 |
1 |
Prime factors of 7212 are 2, 3,601. Prime factorization of 7212 in exponential form is:
7212 = 22×31×6011
Prime Factorization of 7220
2 | 7220 |
2 | 3610 |
5 | 1805 |
19 | 361 |
19 | 19 |
1 |
Prime factors of 7220 are 2, 5,19. Prime factorization of 7220 in exponential form is:
7220 = 22×51×192
Now multiplying the highest exponent prime factors to calculate the LCM of 7212 and 7220.
LCM(7212,7220) = 22×31×51×192×6011
LCM(7212,7220) = 13017660
Factors of 7212
List of positive integer factors of 7212 that divides 7212 without a remainder.
1, 2, 3, 4, 6, 12, 601, 1202, 1803, 2404, 3606, 7212
Factors of 7220
List of positive integer factors of 7220 that divides 7220 without a remainder.
1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7212 and 7220, than apply into the LCM equation.
GCF(7212,7220) = 4
LCM(7212,7220) = ( 7212 × 7220) / 4
LCM(7212,7220) = 52070640 / 4
LCM(7212,7220) = 13017660
(i) The LCM of 7220 and 7212 is associative
LCM of 7212 and 7220 = LCM of 7220 and 7212
1. What is the LCM of 7212 and 7220?
Answer: LCM of 7212 and 7220 is 13017660.
2. What are the Factors of 7212?
Answer: Factors of 7212 are 1, 2, 3, 4, 6, 12, 601, 1202, 1803, 2404, 3606, 7212. There are 12 integers that are factors of 7212. The greatest factor of 7212 is 7212.
3. What are the Factors of 7220?
Answer: Factors of 7220 are 1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 3610, 7220. There are 18 integers that are factors of 7220. The greatest factor of 7220 is 7220.
4. How to Find the LCM of 7212 and 7220?
Answer:
Least Common Multiple of 7212 and 7220 = 13017660
Step 1: Find the prime factorization of 7212
7212 = 2 x 2 x 3 x 601
Step 2: Find the prime factorization of 7220
7220 = 2 x 2 x 5 x 19 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 13017660 = 2 x 2 x 3 x 5 x 19 x 19 x 601
Step 4: Therefore, the least common multiple of 7212 and 7220 is 13017660.