Given the following prime factors, determine the original number as well as all of its factors.

Question

2*3*5*7

I know that 2*3*5*7 is 210 but I don't know what to do next.

Answer 1

your number is 2*3*5*7 = 210

Now for factors take any combination of
single factors --- 4 of them
pairs of factors -- you should find 6 of them
triples of factors --- you should find 4 of them
all of them ---- clearly the number 210 itself