Factors of 787

787 has 2 factors: 1 and 787. Its prime factorization is 787.

Factor pairs of 787

Factor×FactorProduct
1×787787

Negative pairs work too: (−1) × (−787) = 787.

Number of factors
2
Factor pairs
1
Sum of factors
788
Prime or composite
Prime
Even or odd
Odd
Perfect square
No
Prime factorization 787

How to find the factors of 787

Test every whole number from 1 up to the square root of 787 (√787 ≈ 28.054). Each number that divides evenly gives you two factors at once: the divisor and the quotient.

  • 787 ÷ 1 = 787 — so 1 and 787 are factors
  • 787 ÷ 2 = 393.5 — not a whole number
  • 787 ÷ 3 = 262.333 — not a whole number
  • 787 ÷ 4 = 196.75 — not a whole number
  • 787 ÷ 5 = 157.4 — not a whole number
  • 787 ÷ 6 = 131.167 — not a whole number
  • 787 ÷ 7 = 112.429 — not a whole number
  • 787 ÷ 8 = 98.375 — not a whole number
  • 787 ÷ 9 = 87.444 — not a whole number
  • 787 ÷ 10 = 78.7 — not a whole number
  • 787 ÷ 11 = 71.545 — not a whole number
  • 787 ÷ 12 = 65.583 — not a whole number
  • 787 ÷ 13 = 60.538 — not a whole number
  • 787 ÷ 14 = 56.214 — not a whole number
  • 787 ÷ 15 = 52.467 — not a whole number
  • 787 ÷ 16 = 49.188 — not a whole number
  • 787 ÷ 17 = 46.294 — not a whole number
  • 787 ÷ 18 = 43.722 — not a whole number
  • 787 ÷ 19 = 41.421 — not a whole number
  • 787 ÷ 20 = 39.35 — not a whole number
  • 787 ÷ 21 = 37.476 — not a whole number
  • 787 ÷ 22 = 35.773 — not a whole number
  • 787 ÷ 23 = 34.217 — not a whole number
  • 787 ÷ 24 = 32.792 — not a whole number
  • 787 ÷ 25 = 31.48 — not a whole number
  • 787 ÷ 26 = 30.269 — not a whole number
  • 787 ÷ 27 = 29.148 — not a whole number
  • 787 ÷ 28 = 28.107 — not a whole number

Collecting both numbers from every successful division gives the complete list: 1 and 787.

Prime factorization of 787

787 is a prime number, so it cannot be broken down any further. Its prime factorization is simply 787.

Properties of 787

  • 787 is a prime number.
  • The sum of all its factors is 788; the sum of its proper factors (excluding 787) is 1, which makes it a deficient number (its proper factors add up to less than itself).
  • 787 is not a perfect square, so its factors pair up evenly.
  • Multiples of 787 include 1,574, 2,361, 3,148, 3,935 and so on.

Factors vs. multiples

Factors of 787 are the numbers that divide into it; multiples of 787 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 787?

The factors of 787 are 1 and 787. Each of these divides 787 with no remainder.

How many factors does 787 have?

787 has 2 positive factors, which form 1 factor pair. Counting negative factors as well doubles that to 4.

What is the prime factorization of 787?

787 = 787. 787 is prime, so it is its own prime factorization.

Is 787 a prime number?

Yes. 787 is prime because its only factors are 1 and 787.