Given a non-empty array of unique positive integers A, consider the following graph:

There are A.length nodes, labelled A[0] to A[A.length - 1];
There is an edge between A[i] and A[j] if and only if A[i] and A[j] share a common factor greater than 1.

Return the size of the largest connected component in the graph.
 



Example 1:
Input: [4,6,15,35]
Output: 4



Example 2:
Input: [20,50,9,63]
Output: 2



Example 3:
Input: [2,3,6,7,4,12,21,39]
Output: 8


Note:

1 <= A.length <= 20000
1 <= A[i] <= 100000

```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 = 'class Solution:\n    def largestComponentSize(self, A: List[int]) -> int:\n        parents = {val:val for val in A}\n        sizes = {val:1 for val in A}\n        factorprez = {} \n        maxsize = 0\n        \n        def union(one, two):\n            r1 = findroot(one)\n            r2 = findroot(two)\n            \n            if r1 == r2: return sizes[r1]\n            \n            big, small = (r1, r2) if sizes[r1] > sizes[r2] else (r2, r1)\n            parents[small] = big\n            sizes[big] += sizes[small]\n            return sizes[big]\n            \n        def findroot(node):\n            if parents[node] != node:\n                node = findroot(parents[node])\n            return parents[node]\n        \n        def primes_before(val):\n            candidates = [True] * (val + 1)\n            primes = []\n            for i in range(2, len(candidates)):\n                if not candidates[i]: continue\n                primes.append(i)\n                for j in range(i, val+1, i):\n                    candidates[j] = False\n            return primes\n        \n        primes = primes_before(100000)\n        primeset = set(primes)\n        \n        for val in A:\n            sval = val\n            prime_idx = 0\n            while sval not in primeset and primes[prime_idx] <= sval:\n                if sval % primes[prime_idx] == 0:\n                    if primes[prime_idx] in factorprez:\n                        maxsize = max(maxsize, union(val, factorprez[primes[prime_idx]]))\n                    else:\n                        factorprez[primes[prime_idx]] = val\n                    \n                    while sval % primes[prime_idx] == 0:\n                        sval //= primes[prime_idx]\n                \n                prime_idx += 1\n            \n            if sval in primeset:\n                if sval in factorprez:\n                    maxsize = max(maxsize, union(val, factorprez[sval]))\n                else:\n                    factorprez[sval] = val\n\n        return maxsize'
_co = compile(_CODE, USER_FILENAME, "exec")
exec(_co, ns, ns)

_target = None
_fn_name = 'largestComponentSize'
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: 1197644