Returns the greatest common divisor of two or more integers. The greatest common divisor is the largest integer that divides both number1 and number2 without a remainder.
If this function is not available, and returns the #NAME? error, install and load the Analysis ToolPak add-in.
- On the Tools menu, click Add-Ins.
- In the Add-Ins available list, select the Analysis ToolPak box, and then click OK.
- If necessary, follow the instructions in the setup program.
Number1, number2, ... are 1 to 29 values. If any value is not an integer, it is truncated.
- If any argument is nonnumeric, GCD returns the #VALUE! error value.
- If any argument is less than zero, GCD returns the #NUM! error value.
- One divides any value evenly.
- A prime number has only itself and one as even divisors.
The example may be easier to understand if you copy it to a blank worksheet.
How to copy an example
- Create a blank workbook or worksheet.
- Select the example in the Help topic.
Note Do not select the row or column headers.
Selecting an example from Help
- Press CTRL+C.
- In the worksheet, select cell A1, and press CTRL+V.
- To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.
||Greatest common divisor of 5 and 2 (1)
||Greatest common divisor of 24 and 36 (12)
||Greatest common divisor of 7 and 1 (1)
||Greatest common divisor of 5 and 0 (5)