Factors of 55

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What are the Factors of 55?

Answer

Factors of 55:
1, 5, 11, 55

(number 55 has 4 factors)

Factor Pairs of 55

A Factor Pair of number 55 is a combination of two factors which can be multiplied together to equal 55.

List of all possible Factor Pairs of 55:

  • 1 × 55 = 55
  • 5 × 11 = 55

How to find the Factors of 55

Divide 55 by every whole number from 1 up to 7. Each division without a remainder gives a factor and its pair. There is no point going further: 8 × 8 = 64 is already greater than 55, so any larger divisor would pair with a smaller one you have already checked.

  • 55 ÷ 1 = 55 — factors 1 and 55
  • 55 ÷ 2 — remainder 1, not a factor
  • 55 ÷ 3 — remainder 1, not a factor
  • 55 ÷ 4 — remainder 3, not a factor
  • 55 ÷ 5 = 11 — factors 5 and 11
  • 55 ÷ 6 — remainder 1, not a factor
  • 55 ÷ 7 — remainder 6, not a factor

Why 55 has exactly 4 factors

The count follows from the prime factorization: add 1 to each exponent and multiply. Counting the divisors this way needs no trial division at all, however large the number is.

55 = 5 × 11

(1 + 1) × (1 + 1) = 4

Step-by-step factorization: Prime factors of 55.

See Also

About "Factors of a Number" Calculator

This calculator will help you find all factors of a given number. For example, it can help you find out what are the Factors of 55? (The answer is: 1, 5, 11, 55). Pick the number (e.g. '55'). After that hit the 'Find' button.
The Factors of a number are numbers that divides initial number evenly, with no remainder
"Factors of a Number" Calculator
Factors of

Factors Table

NumberFactors
401, 2, 4, 5, 8, 10, 20, 40
411, 41
421, 2, 3, 6, 7, 14, 21, 42
431, 43
441, 2, 4, 11, 22, 44
451, 3, 5, 9, 15, 45
461, 2, 23, 46
471, 47
481, 2, 3, 4, 6, 8, 12, 16, 24, 48
491, 7, 49
501, 2, 5, 10, 25, 50
511, 3, 17, 51
521, 2, 4, 13, 26, 52
531, 53
541, 2, 3, 6, 9, 18, 27, 54
551, 5, 11, 55
561, 2, 4, 7, 8, 14, 28, 56
571, 3, 19, 57
581, 2, 29, 58
591, 59
601, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
611, 61
621, 2, 31, 62
631, 3, 7, 9, 21, 63
641, 2, 4, 8, 16, 32, 64
651, 5, 13, 65
661, 2, 3, 6, 11, 22, 33, 66
671, 67
681, 2, 4, 17, 34, 68
691, 3, 23, 69

FAQ

What are the Factors of 55?

Factors of 55: 1, 5, 11, 55

How many factors does 55 have?

Number 55 has 4 factors

How many Factor Pairs does 55 have?

Number 55 has 2 factor pairs