divisor function
plural of Brost
The act of producing howls.
A fashionably elegant person. / Ostentation; bravado.
(mathematics) A function yielding the sum of the divisors of an integer. It is denoted by the Greek letter σ (sigma).
nの正の約数すべての和を与える関数σ(n)は、乗法的整数論のいくつかの結果において中心的な役割を果たします。
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