Factors of 400

What are the Factors of 400?

1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400 as Factors

or

10×40, 16×25, 1×400, 20×20, 2×200, 4×100, 5×80, 8×50 as Factor Pairs

Formula How to
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Factors

How to find Factors of 400? The factors of a number are the positive integers that divide evenly into that number. In other words, they're the numbers that can be multiplied together to give the original number.

The number of factors a positive integer has is related to its prime factorization. For example, a number that is the product of two distinct primes has exactly three factors: 1, the number itself, and one of the primes. On the other hand, a number that is a perfect square has an odd number of factors, because it has duplicates of its prime factors.

To find the factors of a number, you need to break that number down to its smallest prime number.

The quickest way to find the factors of a number is to divide it by the smallest prime number (bigger than 1) that goes into it evenly with no remainder. Continue this process with each number you get, until you reach 1.

For calculation, here's how to calculate Factors of 400 using the formula above, step by step trees are given below

Factors of 400 are 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200 and 400.

Factor Pairs of 400 are 10×40, 16×25, 1×400, 20×20, 2×200, 4×100, 5×80 and 8×50.

No! 400 is not a prime number.

Yes! 400 is a composite number.

Number Factor Pairs
395 1×395, 5×79
396 11×36, 12×33, 18×22, 1×396, 2×198, 3×132, 4×99, 6×66, 9×44
397 1×397
398 1×398, 2×199
399 19×21, 1×399, 3×133, 7×57
400 10×40, 16×25, 1×400, 20×20, 2×200, 4×100, 5×80, 8×50
401 1×401
402 1×402, 2×201, 3×134, 6×67
403 13×31, 1×403
404 1×404, 2×202, 4×101
405 15×27, 1×405, 3×135, 5×81, 9×45
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