Problem with simple Pari/GP script in Sage Cell Server

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I am trying to run the following Pari/GP script in Sage Cell Server:

for(x=1, 1000000, for(y=1, 1000000, if(floor((sigma(x)/y)+(sigma(y)/x))==2x-sigma(x),print(x,"   ",y))))

I cannot seem to figure out what is wrong with it.

I confirm that I am choosing the correct option in the drop-down menu (i.e., GP).

I am getting the following error message:

***   expected character: ',' or ')' instead of: ...ma(x)/y)+(sigma(y)/x))==2
  ***   x-sigma(x),print(x,"

1 Answer

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Blimey! I figured it out.

Pari/GP script should have been:

for(x=1, 1000000, for(y=1, 1000000, if(floor((sigma(x)/y)+(sigma(y)/x))==2*x-sigma(x),print(x,"   ",y))))

(the original had 2x instead of 2*x).

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Last updated: Apr 04 '20