JavaScript ES6 112
c=n=>{with(a=[]){for(i=k=1;i++<n;)for(;1^n%i;n/=i)push(++k%2?pop()*i:i);k%2||push(pop()*pop());return k<3?[]:a}}
test=k=>{console.log("n = "+k);console.log(c(k))};
test(-1);
test(0);
test(2);
test(4);
test(64);
test(96);
test(32);
kuilin
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