## Challenge yourself with a Math Trivia Quiz!

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### How many obvious/trivial factors does a natural number N have?

The positive +1 and +N and the negative -1 and -N.

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### Which mathematician published more papers during his lifetime that any other mathematician in history?

Erdős published at least 1,525 mathematical papers during his lifetime. He engaged more than 500 collaborators and devoted most of his time to mathematics up until his death in 1996 at the age of 83 years old.

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### What is a positive integer that is equal to the sum of its proper positive divisors (excluding the number itself) called?

You might also think of a perfect number as a number that is half the sum of all of its positive divisors, including itself! This definition is at least 2300 years old as it appears in Euclid's "Elements".

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### Is 36 a perfect number?

Adding up the divisors of 36: 1 + 2 + 3 + 4 + 6 + 9 + 12 + 18 = 55

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### What is the median Erdős number of Fields Medalists?

Of course, as time passes, the smallest Erdős number that can still be achieved will necessarily increase, as mathematicians with low Erdős numbers die and become unavailable for collaboration.

Easy

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