The factors of 100 are the whole numbers that divide 100 exactly with no remainder. The factors of 100 are:

  • 1, 2, 4, 5, 10, 20, 25, 50, 100

Quick Scoop

  • A factor of a number is any whole number that divides it evenly.
  • Example checks for 100:
    • 100÷2=50100÷2=50100÷2=50 → 2 is a factor.
* 100÷4=25100÷4=25100÷4=25 → 4 is a factor.

* 100÷25=4100÷25=4100÷25=4 → 25 is a factor.

Factor pairs of 100

These are pairs of numbers that multiply to 100:

  • (1, 100)
  • (2, 50)
  • (4, 25)
  • (5, 20)
  • (10, 10)

Prime factorization (how 100 is built)

  • 100 can be broken into prime numbers as:
    100=2×2×5×5=22×52100=2×2×5×5=2^2×5^2100=2×2×5×5=22×52.
  • From these primes, you can generate all 9 factors listed above.

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