type numbers with azerty keyboard

Use the French Numerical layout suggested by kostby but Caps Lock (not Control).

In System Preferences, International, Language, Input Menu, there are two French keyboards, French, and French-Numerical. I'm on a US-English Mac and OS X 10.5.8, so your preference settings might be slightly different.

When the French-Numerical keyboard is selected and enabled, pressing the CTRL key enables the numbers in the top row of the the azerty layout.

You may select multiple keyboard profiles, and switch between them. Be sure to check the box at the bottom 'Show input menu in the menu bar' The flag of the selected country will be displayed in the top menu bar. Clicking the flag gives you easy access to choose another keyboard profile, enter special characters, and use Keyboard Viewer to see which keys are enabled in various keyboards.

Perhaps there is, but it appears to me that the AZERTY keyboard layout is designed expressly to make the other characters on those keys easier to type than the numbers. I have no experience using an AZERTY KB layout myself, and no way to test any add-on software that may exist to counteract the keyboard's design.

You may want to buy an inexpensive USB numeric keypad to use when you have lots of numbers to type.