何なん遍べん

な

ん

べ

ん

Meanings

1

Asks about the number of occurrences or repetitions. Often used with verbs of action or experience.

東とう京きょうには何なん遍べん行いったことがありますか。

How many times have you been to Tokyo?

何なん遍べん〈動どう詞し〉てもno matter how many times one does <verb>
何なん遍べん説せつ明めいしても、彼かれは理り解かいしてくれない。
No matter how many times I explain it, he just doesn't understand.
これで何なん遍べん目めasking what number this occurrence is (e.g. 'how many times is this now?')
同おなじミスをするのはこれで何なん遍べん目めだ。
This is how many times now that you've made the same mistake?

何なん回かいN5
何回 is the plain, everyday way to ask 'how many times,' while 何遍 sounds a bit more colloquial or emphatic, often implying repeated effort.
何なん度どN1
何度 can ask about frequency or degree (like temperature), whereas 何遍 only counts occurrences.
幾いく度どN1
何遍 is a colloquial, regional-flavored way to ask 'how many times', while 幾度 sounds more refined and is common in narrative or poetic contexts.

何なん遍べん
Standard kanji spelling; the counter 遍 is used for occurrences or repetitions.
何なんべん
Mixed kana spelling; common in casual writing or when the kanji 遍 is considered difficult.

Compound of 何 (nan, 'what') and the counter 遍 (ben, 'times' or 'occurrences'). The counter 遍 is used for repetitions of an action.