flandre scarlet, patchouli knowledge, and koakuma (touhou) drawn by azel_(laevateinn495) | Danbooru

Danbooru

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ID: 1053539
Uploader: henmere »
Date: almost 15 years ago
Approver: 0xCCBA696 »
Size: 427 KB .jpg (1296x1812) »
Source: pixiv.net/artworks/17211423 »
Rating: Sensitive
Score: 4
Favorites: 8
Status: Active

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Resized to 65% of original (view original)

flandre scarlet, patchouli knowledge, and koakuma (touhou) drawn by azel_(laevateinn495)

Artist's commentary

Original

例大祭新刊サンプル

例大祭8新刊のサンプルです。
表紙：pixiv #17173120 »
中身は、東方のキャラクターが大真面目に解説をしている数学書です。
誰得なのは気にしない方向で。

Shadowflames

almost 15 years ago

[hidden]

I'm missing a page here, so I'm not sure what S(n) and T(n) refers to. From the topic, i'm assuming that S(n) is the sum of all divisors and T(n) is the number of divisors and will translate as such.

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