Level 6

약수

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Understanding '약수' (Divisor)

The Korean word '약수' refers to a divisor, which is an integer that divides another integer without leaving a remainder. This term is commonly used in mathematics, especially when discussing factors of numbers.

Usage in Sentences

You will often see '약수' used when listing or calculating the divisors of a number, such as in "12의 약수는 1, 2, 3, 4, 6, 12입니다." This is a straightforward way to express the concept of divisors.

Common Collocations and Patterns

  • 약수를 구하다: to find divisors; used when calculating or identifying divisors.
  • 약수의 합: sum of divisors; often used in number theory discussions.
  • 약수인지 확인하다: to check if a number is a divisor; used in problem-solving contexts.

Register and Usage Notes

'약수' is a formal mathematical term and is used in academic, educational, and technical contexts. It is not commonly used in everyday conversation unless discussing math.

Common Learner Mistake

Learners sometimes confuse '약수' with '배수' (multiple). Remember, '약수' divides the number, while '배수' is a number that the original number divides. Keeping this distinction clear will help avoid errors.

Example Sentences

12의 약수는 1, 2, 3, 4, 6, 12입니다.

12ui yaksuneun 1, 2, 3, 4, 6, 12imnida.

The divisors of 12 are 1, 2, 3, 4, 6, and 12.

어떤 수의 약수를 모두 더하면 그 수보다 작거나 같을 수도 있습니다.

Eotteon suui yaksureul modu deohamyeon geu suboda jakgeona gat-eul sudo itsseumnida.

The sum of all divisors of a number can be less than or equal to the number itself.

약수를 구할 때는 1부터 그 수까지 나누어 떨어지는 수를 찾으면 됩니다.

Yaksureul guhal ttaeneun 1buteo geu sukaji nanueo tteoreojineun sureul chajeumyeon doemnida.

To find divisors, you look for numbers from 1 up to that number that divide it evenly.