Q: What are the factor combinations of the number 2,700,215?

 A:
Positive:   1 x 27002155 x 5400437 x 38574535 x 77149179 x 15085431 x 6265895 x 30171253 x 2155
Negative: -1 x -2700215-5 x -540043-7 x -385745-35 x -77149-179 x -15085-431 x -6265-895 x -3017-1253 x -2155


How do I find the factor combinations of the number 2,700,215?

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 2,700,215, 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 2,700,215
-1 -2,700,215

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 2,700,215.

Example:
1 x 2,700,215 = 2,700,215
and
-1 x -2,700,215 = 2,700,215
Notice both answers equal 2,700,215

With that explanation out of the way, let's continue. Next, we take the number 2,700,215 and divide it by 2:

2,700,215 ÷ 2 = 1,350,107.5

If the quotient is a whole number, then 2 and 1,350,107.5 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 2,700,215
-1 -2,700,215

Now, we try dividing 2,700,215 by 3:

2,700,215 ÷ 3 = 900,071.6667

If the quotient is a whole number, then 3 and 900,071.6667 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 2,700,215
-1 -2,700,215

Let's try dividing by 4:

2,700,215 ÷ 4 = 675,053.75

If the quotient is a whole number, then 4 and 675,053.75 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 2,700,215
-1 2,700,215
Keep dividing by the next highest number until you cannot divide anymore.

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

157351794318951,2532,1553,0176,26515,08577,149385,745540,0432,700,215
-1-5-7-35-179-431-895-1,253-2,155-3,017-6,265-15,085-77,149-385,745-540,043-2,700,215

More Examples

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