The common factors are: 1, 5
Chat with our AI personalities
That's an infinite list. Numbers with three factors are the squares of prime numbers.
The common factors of 15, 45, and 75 are the numbers that can evenly divide all three of these numbers. To find the common factors, you can first determine the prime factors of each number: 15 = 3 x 5, 45 = 3 x 3 x 5, and 75 = 3 x 5 x 5. The common factors are the numbers that appear in the prime factorization of all three numbers, which in this case are 3 and 5.
15 and 30 are factors of 60. The factors of 60 include the factors of 15 and 30. 45 is not a factor of 60.
Numbers that have both 5 and 3 as factors are multiples of both 5 and 3, which means they are multiples of the least common multiple (LCM) of 5 and 3. The LCM of 5 and 3 is 15, so any multiple of 15 will have both 5 and 3 as factors. Examples of such numbers include 15, 30, 45, 60, and so on.
They are the first three odd prime numbers.