Computation about the paper
Large values of n/phi(n) and sigma(n)/n

To read the paper download the .pdf file colsansHR.pdf,

To see the computations, download the MAPLE sheet file calculSigPhiX.pdf

To work in MAPLE, download in the same directory

the MAPLE code file phisig.mpl, the data file phisig.m and either download in the same directory calculSigPhiX.mw and open it with Maple, or open a new Maple sheet.