What are some simple shortcuts to finding the number of factors that a number has?

Not what all the factors are, but how many factors there are to that number.
And, please make it simple but short and understandable.

2 Answers
Jun 1, 2017

There are no shortcuts, but there are ways by which one can identify, whether a given number is divisible by a prime number or not, which helps in factorizing a number. However, this is only for smaller numbers, say up to #10# and though divisibity methods have been devised for larger numbers too, they tend to become somewhat difficult to follow.

Jun 1, 2017

See video.


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