Factors of 129 are integers that can be divided evenly into 129. There are total 4 factors of 129 i.e. 1, 3, 43, 129. The Pair Factors of 129 are (1, 129), (3, 43) and its Prime Factors are 3 × 43.

• All Factors of 129: 1, 3, 43 and 129
• Negative Factors of 129: -1, -3, -43 and -129
• Prime Factors of 129: 3, 43
• Prime Factorization of 129: 3¹ × 43¹
• Sum of Factors of 129: 176

1.	What Are the Factors of 129?
2.	Factors of 129 by Prime Factorization
3.	Factors of 129 in Pairs
4.	FAQs on Factors of 129

Factors of 129 are pairs of those numbers whose products result in 129. These factors are either prime numbers or composite numbers.

How to Find the Factors of 129?

To find the factors of 129, we will have to find the list of numbers that would divide 129 without leaving any remainder.

• 129/3 = 43; therefore, 3 is a factor of 129 and 43 is also a factor of 129.
• 129/1 = 129; therefore, 1 is a factor of 129 and 129 is also a factor of 129.

Similarly we can find other factors. Hence, the factors of 129 are 1, 3, 43, 129.

☛ Also Check:

• Factors of 144 - The factors of 144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144
• Factors of 33 - The factors of 33 are 1, 3, 11, 33
• Factors of 70 - The factors of 70 are 1, 2, 5, 7, 10, 14, 35, 70
• Factors of 78 - The factors of 78 are 1, 2, 3, 6, 13, 26, 39, 78
• Factors of 84 - The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84

The number 129 is composite and therefore it will have prime factors. Now let us learn how to calculate the prime factors of 129. The first step is to divide the number 129 with the smallest prime factor, here it is 3. We keep dividing until it gives a non-zero remainder.

• 129 ÷ 3 = 43

Further dividing 43 by 3 gives a non-zero remainder. So we stop the process and continue dividing the number 43 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 129 can be written as 3¹ × 43¹ where 3, 43 are prime.

Pair factors of 129 are the pairs of numbers that when multiplied give the product 129. The factors of 129 in pairs are:

• 1 × 129 = (1, 129)
• 3 × 43 = (3, 43)

Negative pair factors of 129 are:

• -1 × -129 = (-1, -129)
• -3 × -43 = (-3, -43)

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