Network::getAdministrators

static function getAdministrators()
{
	static $users;
	if ($users === null)
	{
		$users = [];

		if (MainLoader::includeModule('bitrix24'))
		{
			$users = CBitrix24::getAllAdminId();
		}
		else
		{
			$res = CGroup::getGroupUserEx(1);
			while ($row = $res->fetch())
			{
				$users[] = (int)$row["USER_ID"];
			}
		}
	}

	return $users;
}