A positive integer is said to be *strange* if it has an odd number of distinct positive divisors. Find the sum of all positive *strange* numbers less than or equal to 2016.

**Details and Assumptions**:

- As an explicit example, 4 is
*strange*because it has 3 distinct positive divisors, namely 1, 2 and 4, while 10 is not*strange*because it has 4 distinct positive divisors, namely 1, 2, 5 and 10.

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