** This question is making the assumption that if a planet with a similar size and atmosphere of Earth is colder and has longer nights, it will have larger and more numerous glaciers. If this is not true, pretty much skip the rest of the question below. **
Imagine a planet pretty much identical to Earth, except for the day/night length and temperature. A full rotation of the planet takes about 16 Earth days. Additionally, during an ice age tens of millions years ago, the planet was significantly colder than Earth was at the same time.
Combining the longer nights and the colder temperatures, I'd assume glaciers would form in larger groups than they did on Earth. Not only that, but there would also be more groups of glaciers.
What I do not know, however, is what that would do the modern-day lakes. For example, the Great Lakes in North America were formed by retreating glaciers. In the case of this fictional, colder world, would those lakes be deeper? Would there be more Great Lakes because there are more glaciers?
What would the lakes of a planet with larger and more numerous glaciers look like?