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100, 50, 25, 20, 10, 5,4,2,1 are the factors and there are 9 of them.

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Q: How many factors are there in 100?

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100 has nine factors.

50

The common factors are: 1, 5.

878 three digit numbers have an even number of factors. Every factor of a number has a pair, so there ought to be an even number of factors for every number. However, if a pair of the factors are the same number, then there will be an odd number of factors, that is if the number is a perfect square. Assuming three digit numbers are 100 to 999: From 100 to 999, the perfect squares are 102 = 100 to 312 = 961, a total of 31-10+1 = 22 numbers. So of the 999-100+1 = 900 three digit numbers, 22 have an odd number of factors, so 900-22 = 878 have an even number of factors.

36 and 100, among others.

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The factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, and 100. Therefore, if you count both 1 and 100, it has 9 factors.

factor of 100

1,4,5,10.25.50 & 100

100 has nine factors: 1, 2, 4, 5, 10, 20, 25, 50, 100.

100 trillion (100,000,000,000,000) has 144 factors.

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