【Question 6】The value of the 1000th term in the sequence $1,2,2,3,3,3,4,4,4,4,5,5,5,5,5,6, \cdots$ is $\qquad$

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$$
\begin{array}{l}
1+2+\cdots+44=(1+44) \times 44 \div 2=990 ; \\
1+2+\cdots+45=(1+45) \times 45 \div 2=1035 ;
\end{array}
$$

The value of the 1000th term is 45.