Compute the ratio of factorials
using Prime Factorization.
For example, ComputeDivFact(c(a, b), c(d, e, f)) computes
*\frac{a! b!}{d! e! f!}*.

1 | ```
ComputeDivFact(num, deno = NULL, out.log = FALSE)
``` |

`num` |
The vector of all numbers which have their factorials in the numerator. |

`deno` |
The vector of all numbers which have their factorials
in the denominator. Default is |

`out.log` |
Is the logarithm of the result returned instead?
Default is |

The result of the ratio or its logarithm
if `out.log = TRUE`

.

choose

1 2 3 4 5 6 7 8 9 | ```
choose(100, 20)
ComputeDivFact(100, c(20, 80))
lchoose(100, 20)
ComputeDivFact(100, c(20, 80), out.log = TRUE)
factorial(100)
ComputeDivFact(100)
lfactorial(100)
ComputeDivFact(100, out.log = TRUE)
``` |

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