# This b-file was computed by Antti Karttunen, 2024-12-16 # in GP/PARI CALCULATOR Version 2.9.4 (released) amd64 running linux (x86-64/GMP-6.1.2 kernel) 64-bit version, compiled: Dec 19 2017, gcc version 7.3.0 (Ubuntu 7.3.0-1ubuntu1), threading engine: pthread # with the following program: # # A057723(n) = { my(f=factor(n)~); prod(i=1, #f, sigma(f[1, i]^f[2,i])-1); }; # memoA378997 = Map(); # A378997(n) = if(1==n,1,my(v); if(mapisdefined(memoA378997,n,&v), v, v = -sumdiv(n,d,if(d