21÷ 7 = 3, so 21 can be divided evenly by 7 and is also a multiple of 7. Since, 3 * 7= 21. 49÷ 7 = 7, so 49 can be divided by 7 and is also a multiple of 7. Since, 7 * 7= 49….List of the Multiples of 7.
| Multiplication | Multiples of 7 |
|---|---|
| 7 * 3 | 21 |
| 7 * 4 | 28 |
| 7 * 5 | 35 |
| 7 * 6 | 42 |
What is the smallest number that has exactly 8 factors?
with one exception. The smallest number with 8 divisors would be 30 = 2*3*5 if the theorem always held, but in fact the smallest number with 8 divisors is 24.
What is a number that has exactly 7 different prime factors?
Originally Answered: What is a number that has excatly 7 different prime factors? The smallest number with seven distinct prime factors is 2*3*5*7*11*13*17 = 510510. You can take any seven different prime factors, multiply them together, and you’ll have a number with seven different prime factors – by definition. P.S.
What is the smallest positive integer that has exactly 7 factors?
The first thing you can say just by looking at the question is that the answer will be a perfect square. Perfect squares always have an odd number of factors whereas non perfect squares always have an even number of factors. There is a formula that gives you the number of factors of a positive integer > 1 from its prime factorization.
How many factors of a number are there?
Factors of Numbers Factors of 36 Factors of 24 Factors of 12 Factors of 48 Factors of 72 Factors of 120 Factors of 18 Factors of 25 factors of 98 factors of 415
How to find the sum of factors of a number?
Factors Formulas 1 Total Number of Factors for N = (a+1) (b+1) (c+1) 2 Sum of factors of N = [ (Xa+1-1)/X-1] × [ (Yb+1-1)/Y-1] × [ (Zc+1-1)/Z-1] 3 Product of factors of N = NTotal No. of Factors/2. Example: Find the total number of factors of 90 along with sum and product of all factors. …
