Q: What are the factor combinations of the number 771,895?

 A:
Positive:   1 x 7718955 x 154379317 x 2435487 x 1585
Negative: -1 x -771895-5 x -154379-317 x -2435-487 x -1585


How do I find the factor combinations of the number 771,895?

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 771,895, 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.

1 771,895
-1 -771,895

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 771,895.

Example:
1 x 771,895 = 771,895
and
-1 x -771,895 = 771,895
Notice both answers equal 771,895

With that explanation out of the way, let's continue. Next, we take the number 771,895 and divide it by 2:

771,895 ÷ 2 = 385,947.5

If the quotient is a whole number, then 2 and 385,947.5 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:

1 771,895
-1 -771,895

Now, we try dividing 771,895 by 3:

771,895 ÷ 3 = 257,298.3333

If the quotient is a whole number, then 3 and 257,298.3333 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:

1 771,895
-1 -771,895

Let's try dividing by 4:

771,895 ÷ 4 = 192,973.75

If the quotient is a whole number, then 4 and 192,973.75 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:

1 771,895
-1 771,895
Keep dividing by the next highest number until you cannot divide anymore.

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

153174871,5852,435154,379771,895
-1-5-317-487-1,585-2,435-154,379-771,895

More Examples

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