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There are 44 positive integers less than 2,010 that have an odd number of factors.
That would be equal to the sum of all positive integers less than 1000 minus the sum of all positive multiples of three that are less than 1000. That would be equal to: (1000 + 1) * (1000 / 2) - 3 * (333 + 1) * (333 / 2) = 1001 * 500 - 1000 * 166.5 = 500500 - 166500 = 334000
666 integers.
Yes, but greater than all negative integers
There are 544 positive integers less than 1,000 that are either divisible by two or by 11.