
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
A four-digit number  $n=\overline{a b c d}$ , where  $a, b, c$  and  $d$  are digits, with  $a \neq 0$ , is said to be *guanaco* if the product  $\overline{a b} \times \overline{c d}$  is a positive divisor of  $n$ . Find all guanaco numbers. 

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