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Line 1: ~~Innn~~In [[number theory]], a '''multiplicative function''' is an [[arithmetic function]] ''f''(''n'') of the positive [[integer]] ''n'' with the property that ''f''(1) = 1 and whenever ''a'' and ''b'' are [[coprime]], then :''f''(''ab'') = ''f''(''a'') ''f''(''b'').

Multiplicative function: Difference between revisions