Q: What are the factor combinations of the number 355,020,505?

 A:
Positive:   1 x 3550205055 x 710041017 x 5071721535 x 10143443
Negative: -1 x -355020505-5 x -71004101-7 x -50717215-35 x -10143443


How do I find the factor combinations of the number 355,020,505?

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 355,020,505, 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.

1 355,020,505
-1 -355,020,505

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 355,020,505.

Example:
1 x 355,020,505 = 355,020,505
and
-1 x -355,020,505 = 355,020,505
Notice both answers equal 355,020,505

With that explanation out of the way, let's continue. Next, we take the number 355,020,505 and divide it by 2:

355,020,505 ÷ 2 = 177,510,252.5

If the quotient is a whole number, then 2 and 177,510,252.5 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:

1 355,020,505
-1 -355,020,505

Now, we try dividing 355,020,505 by 3:

355,020,505 ÷ 3 = 118,340,168.3333

If the quotient is a whole number, then 3 and 118,340,168.3333 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:

1 355,020,505
-1 -355,020,505

Let's try dividing by 4:

355,020,505 ÷ 4 = 88,755,126.25

If the quotient is a whole number, then 4 and 88,755,126.25 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:

1 355,020,505
-1 355,020,505
Keep dividing by the next highest number until you cannot divide anymore.

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

1573510,143,44350,717,21571,004,101355,020,505
-1-5-7-35-10,143,443-50,717,215-71,004,101-355,020,505

More Examples

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