Hammers per population when building units or buildings:
Quick: 15
Normal: 30
Epic: 45
Marathon: 90
When building world or national wonders:
Quick: 7.5
Normal: 15
Epic: 22.5
Marathon: 45
After multipliers are applied, the figure is rounded down to the nearest whole number. So a city building a world wonder on epic speed will get 22 hammers if it whips 1 population point, 45 hammers if it whips 2 population points, or 45 hammers if it whips 1 population point with access to stone.
Organised Religion doesn't boost the production of units.