finding the first odd abundant number less than $1000$ We say about number $n $ abundant if the sum of the divisors except $n$ is bigger than the number $n$.For example : $12$ is abundant because the sum of divisors except $12$ is bigger than $12$ : $1+2+3+4+6=16>12$  .How to find the first odd abundant  number less than $1000$

The oeis is a good source for sequences like these.
For example, your answer can be found here as linked from here.
In particular, the answer is $945$.
If you want to check this particular example, you could do it as so in Wolfram|Alpha.
