Question

The sum of all the factors of 27 is the 5th multiple of a number. What is the number? Please help me.......​

Answer 1

`\displaystyle 8`

Explanation:

List all the factors of twenty-seven, then sum them up:

`\displaystyle 1, 3, 9, 27; 40 = 27 + 3 + 9 + 1`

Now, the clue tells you that forty is the fifth multiple of some quantity, so divide by five to get your result, and it MUST be a whole number, or elce we have no solution here:

`\displaystyle 8 = (40)/(5)`

Eight is the quantity you are looking for, and sinse it is a whole number, it is valid.

I am joyous to assist you at any time.