Given an array of unique integers, each integer is strictly greater than 1.
We make a binary tree using these integers and each number may be used for any number of times.
Each non-leaf node's value should be equal to the product of the values of it's children.
How many binary trees can we make?  Return the answer modulo 10 ** 9 + 7.
Example 1:
Input: A = [2, 4]
Output: 3
Explanation: We can make these trees: [2], [4], [4, 2, 2]
Example 2:
Input: A = [2, 4, 5, 10]
Output: 7
Explanation: We can make these trees: [2], [4], [5], [10], [4, 2, 2], [10, 2, 5], [10, 5, 2].
 
Note:

1 <= A.length <= 1000.
2 <= A[i] <= 10 ^ 9.

```python

USER_FILENAME = "<user_code>"
import sys, json, builtins
import math, heapq, bisect, itertools, functools, collections, statistics, fractions, decimal, operator, array, random, re, string, os, pathlib
try:
    import resource as _res
except Exception:
    _res = None
from collections import Counter, defaultdict, deque, OrderedDict
from functools import lru_cache, reduce
from itertools import accumulate, permutations, combinations, product
from math import gcd, ceil, floor, sqrt
from decimal import Decimal
try:
    from typing import *
except Exception:
    pass
try:
    sys.setrecursionlimit(1_000_000)
except Exception:
    pass
try:
    import site as _site
    try:
        _sys_sites = _site.getsitepackages() if hasattr(_site, "getsitepackages") else []
        for _p in _sys_sites:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
    try:
        _usp = _site.getusersitepackages()
        if isinstance(_usp, str):
            _usp = [_usp]
        for _p in _usp:
            if _p and _p not in sys.path:
                sys.path.append(_p)
    except Exception:
        pass
except Exception:
    pass

def _disabled_input(*args, **kwargs):
    raise RuntimeError("input() is disabled in callable mode")
builtins.input = _disabled_input

ns = {"__name__": "__judge__"}  # prevent if __name__ == "__main__" blocks
for _k, _v in list(globals().items()):
    if not _k.startswith("_"):
        ns[_k] = _v
_CODE = 'import math\n\n\nclass Solution:\n    @staticmethod\n    def numFactors(num, A_set):\n        factors = set()\n        for a in A_set:\n            if num % a == 0 and num // a in A_set:\n                factors.add(a)\n                factors.add(num // a)\n        return factors\n\n    @staticmethod\n    def numFactoredTrees(root, results, A_set):\n        if root in results:\n            return results[root]\n        factors = Solution.numFactors(root, A_set)\n        # tree can only have depth 1 with the root node alone\n        if len(factors) == 0:\n            results[root] = 1\n            return 1\n        # tree can have depth greater than 1\n        n = 1  # depth 1\n        while len(factors) > 0:\n            factor = factors.pop()\n            remainder = root // factor\n            if factor not in results:\n                results[factor] = Solution.numFactoredTrees(factor, results, A_set)\n            if factor == remainder:\n                n += results[factor] * results[factor]\n            else:\n                factors.remove(remainder)\n                if remainder not in results:\n                    results[remainder] = Solution.numFactoredTrees(remainder, results, A_set)\n                n += results[factor] * results[remainder] * 2\n        results[root] = n\n        return n\n\n    def numFactoredBinaryTrees(self, A) -> int:\n        #A.sort()\n        A_set = set(A)\n        results = {}\n        return sum([Solution.numFactoredTrees(a, results, A_set) for a in A]) % (10 ** 9 + 7)\n\n'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'numFactoredBinaryTrees'
if _fn_name:
    if "Solution" in ns:
        try:
            _obj = ns["Solution"]()
            if hasattr(_obj, _fn_name):
                _target = getattr(_obj, _fn_name)
        except Exception:
            _target = None
    if _target is None and _fn_name in ns and callable(ns[_fn_name]):
        _target = ns[_fn_name]
# Fallback: if there's exactly one user-defined function, use it
if _target is None:
    _cands = [v for k, v in ns.items() if callable(v) and getattr(v, "__module__", "") in ("__judge__", "__main__")]
    _user_funcs = [c for c in _cands if getattr(c, "__name__", "").startswith("_") is False]
    if len(_user_funcs) == 1:
        _target = _user_funcs[0]
if _target is None:
    raise RuntimeError(f"Could not resolve callable '{_fn_name}'")

_raw = sys.stdin.read().strip()
if _raw:
    _parsed = json.loads(_raw)
    if isinstance(_parsed, dict):
        _kwargs = _parsed.get("kwargs", {})
        _args = _parsed.get("args", [])
    else:
        _args, _kwargs = _parsed, {}
else:
    _args, _kwargs = [], {}
if not isinstance(_args, (list, tuple)):
    _args = [_args]
_res = _target(*_args, **_kwargs)
try:
    sys.stdout.write(repr(_res) + "\n")
except Exception:
    pass

```

Measured memory_bytes: 7350