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FactorMultiplicity

multiplicity of a factor of an integer
Syntax 

FactorMultiplicity(N:INT, Fac:INT):INT

Description
This function counts how many times a give factor divides a given integer. Obviously Fac must not be -1, 0, or 1, and N must not be zero.

Example 
  FactorMultiplicity(20, 2);
2
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  FactorMultiplicity(20, 10);
1
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  FactorMultiplicity(20, 7);
0
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