Now you do! To use this command on the PC version of Skyrim, open up the console by pressing the tilde key(~) on your keyboard. Then type the following code and press enter.
player.placeatme [code] [quantity]
Replace [code] with one of the dragon codes below. Replace [number] with the number of dragons you want to spawn. So for example you want to spawn three Blood Dragons with Dragon Souls, type:
player.placeatme F77F8 3
- Dragon (with soul): EAFB4
- Dragon, Blood (with soul): F77F8
- Dragon, Blood (no soul): F8118
- Dragon, Elder (with soul): F811A
- Dragon, Elder (no soul): 000FEA9B
- Dragon, Frost (with soul) 0010FEEC
To quickly retype the last code, press the "Up" button(cursor) on your keyboard. Spawn as many dragons as you like or as your PC can handle. This is how to spawn an unlimited number of dragons.
This is cheating and can get you BANNED from playing Skyrim ever again. Just kidding. Remember that using this trick may have unseen consequences like messed-up achievements, instant death and carnage in your neighborhood.
If you're wondering how many dragons flying around looks like and you do not have a top-of-the-line PC, here's a video of Skyrim with 50 spawned Elder Dragons in Riverwood.