
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
The smallest positive integer with exactly $980$ divisors can be expressed as $m \cdot 4^k$, where $m$ and $k$ are integers, and $4$ does not divide $m$. Compute $m+k$.
A) 629  
B) 639  
C) 646  
D) 649  
E) 679

Present the answer in LaTex format: \boxed{Your answer}
user