在aiogram中请求电话号码需要通过Bot API进行。首先需要在BotFather中获取Token，并将其放入代码中。然后，创建一个InlineKeyboardButton，用于触发request_contact和request_location事件。最后，用add(InlineKeyboardButton)方法将该按钮添加到需要发送的消息中。

以下是示例代码：

from aiogram.types import ReplyKeyboardMarkup, KeyboardButton, InlineKeyboardMarkup, InlineKeyboardButton, ReplyKeyboardRemove

# 获取Token
API_TOKEN = 'YOUR_API_TOKEN'

bot = Bot(token=API_TOKEN, parse_mode=ParseMode.HTML)
dp = Dispatcher(bot)

# InlineKeyboardButton创建
button_contact = InlineKeyboardButton(
    text="Send contact", request_contact=True)
button_location = InlineKeyboardButton(
    text="Send location", request_location=True)

# InlineKeyboardMarkup创建
markup = InlineKeyboardMarkup().add(button_contact, button_location)

async def send_contact(message: types.Message):
    await bot.send_message(chat_id=message.chat.id,
                           text="Click on the button to send your phone number",
                           reply_markup=markup)

# 将函数发送到dp
dp.register_message_handler(send_contact)