How many proper factors are there in eighty?

Anonymous

∙ 16y ago

Updated: 8/17/2019

8 proper factors: 2,4,5,8,10,16,20,40.

A Proper factor is any positive integer that divides your number, and we exclude 1 and the number itself.

Wiki User

∙ 16y ago

What else can I help you with?

How many proper factors does 1 have?

None.

What are all the factors of eighty one?

1,3,27 and 81

What is eighty divisible by?

By any of its factors including itself

How many proper factors does 100 have?

Nine proper factors: 1 2 4 5 10 20 25 50 100.

What numbers are prime factors of eighty seven?

3 and 29

How many factors does 91 have?

91 has 4 factors (2 of them which are proper). Those factors are:{1, 7, 13, 91}

What are the greatest factors for eighty-nine?

The greatest factor of 89 is 89.

Do all proper factors have some factors that you can multiply to get another proper factor?

No. Some proper factors are prime.

Does three have proper factors?

No, no prime number has proper factors.

What are the proper factors for the number 1?

One has no proper factors.

What are proper factors for 1?

1 doesn't have proper factors.

How many different factors dose 20 have?

The factors pairs of 20 are 1x20, 2x10, and 4x5 so 20 has 6 factors and 5 proper factors.