How many integers fits in a table depends on the table size. If you set the table size to 256, 256 indexes are available to store integers in.
When you save the table content to sd-card it saves 256 indexes, if 512, 512 indexes will be saved and so on.
So if you need to store 8 integers, you would need a tablesize of 8.
Yes that means that you can store 8 integers with a value range of 32 bit. The 32 bit is the range of each value, the size is how many indexes you have available for storage.
Axoloti intentionally uses table sizes to the power of 2, cause that's what computers like the most. So you can choose between, 2, 4, 8, 16, 32, etc. size, it's the most efficient way of storing data.
For basic knowledge of how much you can load into the sd-ram, from sd-card for example, its A LOT more than you are trying to do here. To overload the sd-ram you need to load more than 8 or 16 numbers, that's very little. So based on your use case, 8 indexes, I would not be worried about sd-ram usage at all.