
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
For a positive integer \( n \), sort its positive divisors as \( 1 = d_1 < d_2 < \cdots < d_k = n \). Find all positive integers \( n \) that are divisible by 2019 and satisfy \( n = d_{19}d_{20} \).

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