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 UnionFind:\n    def __init__(self, n): \n        self.ranks = [0]*n\n        self.parents = [i for i in range(n)]\n        \n        \n    def union(self, i, j): \n        pi = self.parent(i)\n        pj = self.parent(j)\n        if pi == pj: \n            return \n        else: \n            if self.ranks[pi] <= self.ranks[pj]: \n                self.parents[pi] = pj \n                self.ranks[pj] += 1 if self.ranks[pi] == self.ranks[pj] else 0 \n            else: \n                self.parents[pj] = pi\n                \n    def parent(self, i): \n        if self.parents[i] != i: \n            self.parents[i] = self.parent(self.parents[i])\n        return self.parents[i]\n\nclass Solution:\n    def largestComponentSize(self, A: List[int]) -> int:\n        uf = UnionFind(max(A)+1)\n        dic = {}\n        for i, num in enumerate(A): \n            factor = self.decomp(num)\n            dic[num] = factor[0]\n            # print(num, factor)\n            for i in range(0, len(factor)-1): \n                uf.union(factor[i], factor[i+1])\n        \n        count = collections.Counter()\n        for num in A: \n            group_id = uf.parent(dic[num])\n            count[group_id] += 1\n        return max(count[i] for i in count)\n        \n    def decomp(self, num): \n        factor = 2\n        ans = set()\n        # print(\\"num\\", num)\n        while num>=factor*factor: \n            if num%factor==0: \n                num //= factor \n                ans.add(factor)\n            else: \n                factor += 1\n        ans.add(num)\n        # print(\\"num end\\", num)\n        return list(ans)\n'
_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: 9188