455
The least common multiple of 5, 7 and 13 is 455.
What is the sum of the factors 13?
1. Add: 9 + 4 = ? The sum of 9 + 4 is 13.
How do you find the sum of factors?
Sum of Factors The formula for the sum of all factors is given by; Sum of factors of N = [(Xa+1-1)/X-1] × [(Yb+1-1)/Y-1] × [(Zc+1-1)/Z-1]
What are the factors of 5 and 13?
The gcf of 5 and 13 can be obtained like this:
- The factors of 5 are 5, 1.
- The factors of 13 are 13, 1.
- The common factors of 5 and 13 are 1, intersecting the two sets above.
- In the intersection factors of 5 ∩ factors of 13 the greatest element is 1.
- Therefore, the greatest common factor of 5 and 13 is 1.
How to find the sum of factors of N?
We know that number of factors of N is given by n ( F )= ( p + 1) ( q + 1) ( r + 1). Let us understand this by taking one example. Example 3: Find the product of all the factors of 60. 1 st we will list down all the factors of 60 these are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60. Example 4: find the product of all the factors of 100.
How to find the sum of odd factors?
Sum of the factors will be (2^0 + 2^1 + 2^2 + 2^3 + 2^4)* (3^0 + 3^1)* (5^0 + 5^1) => (1+2+4+8+16)* (1+3)* (1+5) => 31*4*6 => 744 3. Number of even factors = Total number of factors – Number of odd factors => In order to find out the odd factors, just ignore the powers of 2 => 4.
Which is the sum of all the factors of the number 18?
Consider the number 18. Sum of factors = 1 + 2 + 3 + 6 + 9 + 18 Writing divisors as powers of prime factors.
How to find sum of all the factors of 120?
Step2: In above step 3 prime numbers are used. Hence number of ways are 2 3-1 = 4.Infact we can mention these cases as well 9×35, 5 x 63, 7 x 45, 15 x 21. Example 2: Find the product of all the factors of 120 ?
