Factors of 489

How to find the factors of 489

Test every whole number from 1 up to the square root of 489 (√489 ≈ 22.113). Each number that divides evenly gives you two factors at once: the divisor and the quotient.

• 489 ÷ 1 = 489 — so 1 and 489 are factors
• 489 ÷ 2 = 244.5 — not a whole number
• 489 ÷ 3 = 163 — so 3 and 163 are factors
• 489 ÷ 4 = 122.25 — not a whole number
• 489 ÷ 5 = 97.8 — not a whole number
• 489 ÷ 6 = 81.5 — not a whole number
• 489 ÷ 7 = 69.857 — not a whole number
• 489 ÷ 8 = 61.125 — not a whole number
• 489 ÷ 9 = 54.333 — not a whole number
• 489 ÷ 10 = 48.9 — not a whole number
• 489 ÷ 11 = 44.455 — not a whole number
• 489 ÷ 12 = 40.75 — not a whole number
• 489 ÷ 13 = 37.615 — not a whole number
• 489 ÷ 14 = 34.929 — not a whole number
• 489 ÷ 15 = 32.6 — not a whole number
• 489 ÷ 16 = 30.563 — not a whole number
• 489 ÷ 17 = 28.765 — not a whole number
• 489 ÷ 18 = 27.167 — not a whole number
• 489 ÷ 19 = 25.737 — not a whole number
• 489 ÷ 20 = 24.45 — not a whole number
• 489 ÷ 21 = 23.286 — not a whole number
• 489 ÷ 22 = 22.227 — not a whole number

Collecting both numbers from every successful division gives the complete list: 1, 3, 163 and 489.

Prime factorization of 489

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

The primes you divided by give 489 = 3 × 163. From the exponents you can also count the factors without listing them: (1 + 1) × (1 + 1) = 4.

Properties of 489

• 489 is a composite number.
• The sum of all its factors is 656; the sum of its proper factors (excluding 489) is 167, which makes it a deficient number (its proper factors add up to less than itself).
• 489 is not a perfect square, so its factors pair up evenly.
• Multiples of 489 include 978, 1,467, 1,956, 2,445 and so on.

Factors vs. multiples

Factors of 489 are the numbers that divide into it; multiples of 489 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.