Factors of 30
- Factors of 30: 1, 2, 3, 5, 6, 10, 15 and 30.
- Negative Factors of 30: -1, -2, -3, -5, -6, -10, -15 and -30.
- Prime Factors of 30: 2, 3, 5.
- Prime Factorization of 30: 2 × 3 × 5 = 2 × 3 × 5.
- Sum of Factors of 30: 72.
What is the least number of factors that a number can have?
So, no, the minimum number of factors a number can have is 1, not 2. And, yes, you can tell if a number is prime, composite or equal to 1 by counting the factors. Note: 0 is considered a composite number with an infinite number of factors because 0∗k=0 for all k.
Can a prime number be divided by an odd number?
Now a prime number can only be divided by 1 and itself. For eg. 2,3,5,7,11,13,17,etc. Whereas odd number cannot be perfectly divided by 2 without leaving remainder 1. The general formula for odd number is 2n-1 where n€natural numbers. If an odd number is not a prime number then that odd number has extra divisible factor except 1 and itself.
What are the factors and prime factors of 160?
The 2 distinct prime factors (listing each prime factor only once) of 160 are 2 and 5. The prime factorization of 160 is 2 x 2 x 2 x 2 x 2 x 5 or, in index form (in other words, using exponents), 25 x 5.
Are there any numbers under 100 that have exactly three factors?
The middle number of each factor list is used twice because that factor is squared, but since the factor is the same number, it is not counted twice. Squares of prime numbers are the only numbers that have exactly three factors. The other numbers under 100 with odd numbers of factors are one, 16, 36 and 81.
What is the formula for an odd number?
The general formula for odd number is 2n-1 where n€natural numbers. If an odd number is not a prime number then that odd number has extra divisible factor except 1 and itself. For eg. 9 is odd but not a prime.
