最小公倍數與最大公約數計算器
求數的最小公倍數和最大公約數。
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使用方法
- 1填寫各項
輸入數字或選擇所需選項。
- 2檢視結果
更改任何值時，答案會立即更新。
- 3使用結果
複製結果或記下來。不會向任何地方傳送任何內容。
About this tool
Enter two or more whole numbers separated by commas or spaces. You get the greatest common factor (also called HCF or GCD), the least common multiple and the prime factorisation of each number.
When to use it
Find the least common multiple and greatest common factor of numbers.
Tips
Use the LCM to add fractions and the GCF to simplify them.
Privacy
Everything runs in your browser, so your data is not uploaded or stored.
Methods
Find the GCF by listing common factors or dividing by common primes, and the LCM by taking each prime to its highest power. The product of two numbers equals their GCF times their LCM.
計算示例
With the boxes at their starting values (Numbers (separated by commas): 12, 18, 30), the tool shows: LCM (least common multiple): 180; 12: 2^2 × 3; 18: 2 × 3^2; 30: 2 × 3 × 5; GCF (greatest common factor): 6. Change any box to see your own numbers. The result updates as you type, and nothing leaves your browser.
獲得最佳結果的提示
在相信結果之前先檢查每一個輸入項，因為一個錯誤的數字就會改變整個答案。請使用工資單、賬單、證書或合同上的準確數字，並記下計算日期。稅率、門檻和規則會不時變化，因此對於稅費和法律事務，請將結果視為估算，並與本頁註明的官方來源核對。您可以嘗試任意多個方案；不會儲存或傳送任何內容，重新整理頁面會清空輸入。
要點
- 分類: 日常工具
- 在瀏覽器中執行，無需註冊，無需上傳。
- 您輸入的資訊保留在裝置上。
- 提供多種語言。
- 內容最後稽核日期:
常見問題
What is the difference between LCM and GCF?
The GCF is the largest number that divides all of them. The LCM is the smallest number that all of them divide into.
Is GCF the same as HCF?
Yes. GCF, HCF and GCD are different names for the same thing.
What is GCF?
The largest number that divides all of them.
What is LCM?
The smallest number that all of them divide.
What is the LCM of 4 and 6?
12, and their GCF is 2.