Factors of 278 are integers that can be divided evenly into 278. It has a total of 4 factors of which 278 is the biggest factor and the positive factors of 278 are 1, 2, 139, 278. The Prime Factors and Pair Factors of 278 are 2 × 139 and (1, 278), (2, 139) respectively.

• All Factors of 278: 1, 2, 139 and 278
• Negative Factors of 278: -1, -2, -139 and -278
• Prime Factors of 278: 2, 139
• Prime Factorization of 278: 2¹ × 139¹
• Sum of Factors of 278: 420

1.	What Are the Factors of 278?
2.	Factors of 278 by Prime Factorization
3.	Factors of 278 in Pairs
4.	FAQs on Factors of 278

Factors of 278 are pairs of those numbers whose products result in 278. These factors are either prime numbers or composite numbers.

How to Find the Factors of 278?

To find the factors of 278, we will have to find the list of numbers that would divide 278 without leaving any remainder.

• 278/139 = 2; therefore, 139 is a factor of 278 and 2 is also a factor of 278.
• 278/1 = 278; therefore, 1 is a factor of 278 and 278 is also a factor of 278.

Similarly we can find other factors. Hence, the factors of 278 are 1, 2, 139, 278.

☛ Also Check:

• Factors of 26 - The factors of 26 are 1, 2, 13, 26
• Factors of 51 - The factors of 51 are 1, 3, 17, 51
• Factors of 31 - The factors of 31 are 1, 31
• Factors of 27 - The factors of 27 are 1, 3, 9, 27
• Factors of 84 - The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84

The number 278 is composite and therefore it will have prime factors. Now let us learn how to calculate the prime factors of 278. The first step is to divide the number 278 with the smallest prime factor, here it is 2. We keep dividing until it gives a non-zero remainder.

• 278 ÷ 2 = 139

Further dividing 139 by 2 gives a non-zero remainder. So we stop the process and continue dividing the number 139 by the next smallest prime factor. We stop ultimately if the next prime factor doesn't exist or when we can't divide any further.

So, the prime factorization of 278 can be written as 2¹ × 139¹ where 2, 139 are prime.

Pair factors of 278 are the pairs of numbers that when multiplied give the product 278. The factors of 278 in pairs are:

• 1 × 278 = (1, 278)
• 2 × 139 = (2, 139)

Negative pair factors of 278 are:

• -1 × -278 = (-1, -278)
• -2 × -139 = (-2, -139)

NOTE: If (a, b) is a pair factor of a number then (b, a) is also a pair factor of that number.