Q: What are the factor combinations of the number 163,061,555?

 A:
Positive:   1 x 1630615555 x 32612311233 x 6998351165 x 139967
Negative: -1 x -163061555-5 x -32612311-233 x -699835-1165 x -139967


How do I find the factor combinations of the number 163,061,555?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 163,061,555, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 163,061,555
-1 -163,061,555

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 163,061,555.

Example:
1 x 163,061,555 = 163,061,555
and
-1 x -163,061,555 = 163,061,555
Notice both answers equal 163,061,555

With that explanation out of the way, let's continue. Next, we take the number 163,061,555 and divide it by 2:

163,061,555 ÷ 2 = 81,530,777.5

If the quotient is a whole number, then 2 and 81,530,777.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 163,061,555
-1 -163,061,555

Now, we try dividing 163,061,555 by 3:

163,061,555 ÷ 3 = 54,353,851.6667

If the quotient is a whole number, then 3 and 54,353,851.6667 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 163,061,555
-1 -163,061,555

Let's try dividing by 4:

163,061,555 ÷ 4 = 40,765,388.75

If the quotient is a whole number, then 4 and 40,765,388.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 163,061,555
-1 163,061,555
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

152331,165139,967699,83532,612,311163,061,555
-1-5-233-1,165-139,967-699,835-32,612,311-163,061,555

More Examples

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