Q: What are the factor combinations of the number 1,197,365?

 A:
Positive:   1 x 11973655 x 23947313 x 9210565 x 18421109 x 10985169 x 7085545 x 2197845 x 1417
Negative: -1 x -1197365-5 x -239473-13 x -92105-65 x -18421-109 x -10985-169 x -7085-545 x -2197-845 x -1417


How do I find the factor combinations of the number 1,197,365?

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 1,197,365, 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 1,197,365
-1 -1,197,365

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 1,197,365.

Example:
1 x 1,197,365 = 1,197,365
and
-1 x -1,197,365 = 1,197,365
Notice both answers equal 1,197,365

With that explanation out of the way, let's continue. Next, we take the number 1,197,365 and divide it by 2:

1,197,365 ÷ 2 = 598,682.5

If the quotient is a whole number, then 2 and 598,682.5 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 1,197,365
-1 -1,197,365

Now, we try dividing 1,197,365 by 3:

1,197,365 ÷ 3 = 399,121.6667

If the quotient is a whole number, then 3 and 399,121.6667 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 1,197,365
-1 -1,197,365

Let's try dividing by 4:

1,197,365 ÷ 4 = 299,341.25

If the quotient is a whole number, then 4 and 299,341.25 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 1,197,365
-1 1,197,365
Keep dividing by the next highest number until you cannot divide anymore.

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

1513651091695458451,4172,1977,08510,98518,42192,105239,4731,197,365
-1-5-13-65-109-169-545-845-1,417-2,197-7,085-10,985-18,421-92,105-239,473-1,197,365

More Examples

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