What are the Factors of 640?

Factors of 640 Methods What are the Factors of 640? The following are the different types of factors of 640: • Factors of 640: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640 • Sum of Factors of 640: 1530 • Negative Factors of 640: -1, -2, -4, -5, -8, -10, -16, -20, -32, -40, -64, -80, -128, -160, -320, -640 • Prime Factors of 640: 2, 5 • Prime Factorization of 640: 2^7 × 5^1 There are two ways to find the factors of 640: using factor pairs, and using prime factorization. The Factor Pairs of 640 Factor pairs of 640 are any two numbers that, when multiplied together, equal 640. The question to ask is “what two numbers multiplied together equal 640?” Every factor can be paired with another factor, and multiplying the two will result in 640. To find the factor pairs of 640, follow these steps: Step 1: Find the smallest prime number that is larger than 1, and is a factor of 640. For reference, the first prime numbers to check are 2, 3, 5, 7, 11, and 13. In this case, the smallest factor that’s a prime number larger than 1 is 2. Step 2: Divide 640 by the smallest prime factor, in this case, 2: 640 ÷ 2 = 320 2 and 320 will make a new factor pair. Step 3: Repeat Steps 1 and 2, using 320 as the new focus. Find the smallest prime factor that isn’t 1, and divide 320 by that number. In this case, 2 is the new smallest prime factor: 320 ÷ 2 = 160 Remember that this new factor pair is only for the factors of 320, not 640. So, to finish the factor pair for 640, you’d multiply 2 and 2 before pairing with 160: 2 x 2 = 4 Step 4: Repeat this process until there are no longer any prime factors larger than one to divide by. At the end, you should have the full list of factor pairs. Here are all the factor pairs for 640: (1, 640), (2, 320), (4, 160), (5, 128), (8, 80), (10, 64), (16, 40), (20, 32) So, to list all the factors of 640: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640 The negative factors of 640 would be: -1, -2, -4, -5, -8, -10, -16, -20, -32, -40, -64, -80, -128, -160, -320, -640 Prime Factorization of 640 To find the Prime factorization of 640, we break down all the factors of 640 until we are left with only prime factors. We then express n as a product of multiplying the prime factors together. The process of finding the prime factorization of 640 only has a few differences from the above method of finding the factors of 640. Instead of ensuring we find the right factor pairs, we continue to factor each step until we are left with only the list of smallest prime factors greater than 1. Here are the steps for finding the prime factorization of 640: Step 1: Find the smallest prime number that is larger than 1, and is a factor of 640. For reference, the first prime numbers to check are 2, 3, 5, 7, 11, and 13. In this case, the smallest factor that’s a prime number larger than 1 is 2. Step 2: Divide 640 by the smallest prime factor, in this case, 2 640 ÷ 2 = 320 2 becomes the first number in our prime factorization. Step 3: Repeat Steps 1 and 2, using 320 as the new focus. Find the smallest prime factor that isn’t 1, and divide 320 by that number. The smallest prime factor you pick for 320 will then be the next prime factor. If you keep repeating this process, there will be a point where there will be no more prime factors left, which leaves you with the prime factors for prime factorization. So, the unique prime factors of 640 are: 2, 5 Find the Factors of Other Numbers Practice your factoring skills by exploring how to factor other numbers, like the ones below: Factors of 68 - The factors of 68 are 1, 2, 4, 17, 34, 68 Factors of 88 - The factors of 88 are 1, 2, 4, 8, 11, 22, 44, 88 Factors of 4 - The factors of 4 are 1, 2, 4 Factors of 57 - The factors of 57 are 1, 3, 19, 57