Lets say the odds of winning the lotto are 1 in a million.
The odds of winning if you play 1040 numbers in one week are 1040/Million = .00104
The odds of winning if you play once a week for 1040 weeks are 1 - the odds of not winning = 1 - (999999/1000000)^1040 = .001039
I believe however that the expected value of your lotto tickets are equal. The slightly lower probability of winning if you play once a week is made up by the slim chance that you hit the lotto more than once during that period.