Q: What are the factor combinations of the number 918,965?

 A:
Positive:   1 x 9189655 x 18379323 x 3995561 x 15065115 x 7991131 x 7015305 x 3013655 x 1403
Negative: -1 x -918965-5 x -183793-23 x -39955-61 x -15065-115 x -7991-131 x -7015-305 x -3013-655 x -1403


How do I find the factor combinations of the number 918,965?

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 918,965, 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.

1 918,965
-1 -918,965

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 918,965.

Example:
1 x 918,965 = 918,965
and
-1 x -918,965 = 918,965
Notice both answers equal 918,965

With that explanation out of the way, let's continue. Next, we take the number 918,965 and divide it by 2:

918,965 ÷ 2 = 459,482.5

If the quotient is a whole number, then 2 and 459,482.5 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:

1 918,965
-1 -918,965

Now, we try dividing 918,965 by 3:

918,965 ÷ 3 = 306,321.6667

If the quotient is a whole number, then 3 and 306,321.6667 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:

1 918,965
-1 -918,965

Let's try dividing by 4:

918,965 ÷ 4 = 229,741.25

If the quotient is a whole number, then 4 and 229,741.25 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:

1 918,965
-1 918,965
Keep dividing by the next highest number until you cannot divide anymore.

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

1523611151313056551,4033,0137,0157,99115,06539,955183,793918,965
-1-5-23-61-115-131-305-655-1,403-3,013-7,015-7,991-15,065-39,955-183,793-918,965

More Examples

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