Wiki[1] seems to support your last sentence's description of how base 60 appeared. Now, that approach would guarantee that your base is a product of two number

Wiki[1] seems to support your last sentence's description of how base 60 appeared. Now, that approach would guarantee that your base is a product of two numbers (# fingers * # bones on non-thumb fingers). And, if your non-thumb fingers are roughly equivalent to each other, then that would guarantee it's a product of three numbers (# fingers * # non-thumb fingers * # bones per non-thumb finger). So I would say "it's a product of lots of numbers" does have a lot to do with the origins of base 60. Base 10, of course, is (# hands * # fingers per hand). Base 12 being more factorable than base 10 is just the luck of getting 3 * 4 vs 2 * 5. [1] https://en.wikipedia.org/wiki/Sexagesimal https://en.wikipedia.org/wiki/Sexagesimal