Factors of 738

738 has 12 factors: 1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369 and 738. Its prime factorization is 2 × 3² × 41.

Factor pairs of 738

Factor×FactorProduct
1×738738
2×369738
3×246738
6×123738
9×82738
18×41738

Negative pairs work too: (−1) × (−738), (−2) × (−369), … = 738.

Number of factors
12
Factor pairs
6
Sum of factors
1,638
Prime or composite
Composite
Even or odd
Even
Perfect square
No
Prime factorization 2 × 3² × 41

How to find the factors of 738

Test every whole number from 1 up to the square root of 738 (√738 ≈ 27.166). Each number that divides evenly gives you two factors at once: the divisor and the quotient.

  • 738 ÷ 1 = 738 — so 1 and 738 are factors
  • 738 ÷ 2 = 369 — so 2 and 369 are factors
  • 738 ÷ 3 = 246 — so 3 and 246 are factors
  • 738 ÷ 4 = 184.5 — not a whole number
  • 738 ÷ 5 = 147.6 — not a whole number
  • 738 ÷ 6 = 123 — so 6 and 123 are factors
  • 738 ÷ 7 = 105.429 — not a whole number
  • 738 ÷ 8 = 92.25 — not a whole number
  • 738 ÷ 9 = 82 — so 9 and 82 are factors
  • 738 ÷ 10 = 73.8 — not a whole number
  • 738 ÷ 11 = 67.091 — not a whole number
  • 738 ÷ 12 = 61.5 — not a whole number
  • 738 ÷ 13 = 56.769 — not a whole number
  • 738 ÷ 14 = 52.714 — not a whole number
  • 738 ÷ 15 = 49.2 — not a whole number
  • 738 ÷ 16 = 46.125 — not a whole number
  • 738 ÷ 17 = 43.412 — not a whole number
  • 738 ÷ 18 = 41 — so 18 and 41 are factors
  • 738 ÷ 19 = 38.842 — not a whole number
  • 738 ÷ 20 = 36.9 — not a whole number
  • 738 ÷ 21 = 35.143 — not a whole number
  • 738 ÷ 22 = 33.545 — not a whole number
  • 738 ÷ 23 = 32.087 — not a whole number
  • 738 ÷ 24 = 30.75 — not a whole number
  • 738 ÷ 25 = 29.52 — not a whole number
  • 738 ÷ 26 = 28.385 — not a whole number
  • 738 ÷ 27 = 27.333 — not a whole number

Collecting both numbers from every successful division gives the complete list: 1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369 and 738.

Prime factorization of 738

Divide by the smallest prime that fits, and keep going until the quotient is 1:

738 ÷ 2 = 369
369 ÷ 3 = 123
123 ÷ 3 = 41
41 ÷ 41 = 1

The primes you divided by give 738 = 2 × 3² × 41. From the exponents you can also count the factors without listing them: (1 + 1) × (2 + 1) × (1 + 1) = 12.

Properties of 738

  • 738 is a composite number.
  • The sum of all its factors is 1,638; the sum of its proper factors (excluding 738) is 900, which makes it a abundant number (its proper factors add up to more than itself).
  • 738 is not a perfect square, so its factors pair up evenly.
  • Multiples of 738 include 1,476, 2,214, 2,952, 3,690 and so on.

Factors vs. multiples

Factors of 738 are the numbers that divide into it; multiples of 738 are the numbers it divides into. Every number has a limited set of factors but infinitely many multiples. To work with any other number, use the factors calculator, or find shared factors with the GCF calculator.

Frequently asked questions

What are the factors of 738?

The factors of 738 are 1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369 and 738. Each of these divides 738 with no remainder.

How many factors does 738 have?

738 has 12 positive factors, which form 6 factor pairs. Counting negative factors as well doubles that to 24.

What is the prime factorization of 738?

738 = 2 × 3² × 41. Its distinct prime factors are 2, 3 and 41.

Is 738 a prime number?

No. 738 is composite because it has 12 factors, more than the two a prime number has.