Factors of 221 are integers that can be divided evenly into 221. There are overall 4 factors of 221 among which 221 is the biggest factor and its positive factors are 1, 13, 17, 221. The sum of all factors of 221 is 252 and its factors in Pairs are (1, 221), (13, 17).

• All Factors of 221: 1, 13, 17 and 221
• Negative Factors of 221: -1, -13, -17 and -221
• Prime Factors of 221: 13, 17
• Prime Factorization of 221: 13¹ × 17¹
• Sum of Factors of 221: 252

1.	What Are the Factors of 221?
2.	Factors of 221 by Prime Factorization
3.	Factors of 221 in Pairs
4.	FAQs on Factors of 221

Factors of 221 are pairs of those numbers whose products result in 221. These factors are either prime numbers or composite numbers.

How to Find the Factors of 221?

To find the factors of 221, we will have to find the list of numbers that would divide 221 without leaving any remainder.

• 221/13 = 17; therefore, 13 is a factor of 221 and 17 is also a factor of 221.
• 221/1 = 221; therefore, 1 is a factor of 221 and 221 is also a factor of 221.

Similarly we can find other factors. Hence, the factors of 221 are 1, 13, 17, 221.

☛ Also Check:

• Factors of 11 - The factors of 11 are 1, 11
• Factors of 34 - The factors of 34 are 1, 2, 17, 34
• Factors of 14 - The factors of 14 are 1, 2, 7, 14
• 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 49 - The factors of 49 are 1, 7, 49

The number 221 is composite and therefore it will have prime factors. Now let us learn how to calculate the prime factors of 221. The first step is to divide the number 221 with the smallest prime factor, here it is 13. We keep dividing until it gives a non-zero remainder.

• 221 ÷ 13 = 17

Further dividing 17 by 13 gives a non-zero remainder. So we stop the process and continue dividing the number 17 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 221 can be written as 13¹ × 17¹ where 13, 17 are prime.

Pair factors of 221 are the pairs of numbers that when multiplied give the product 221. The factors of 221 in pairs are:

• 1 × 221 = (1, 221)
• 13 × 17 = (13, 17)

Negative pair factors of 221 are:

• -1 × -221 = (-1, -221)
• -13 × -17 = (-13, -17)

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