A:
Positive:
1 x 22106637 x 31580913 x 17005117 x 13003991 x 24293119 x 18577221 x 100031429 x 1547
Negative:
-1 x -2210663-7 x -315809-13 x -170051-17 x -130039-91 x -24293-119 x -18577-221 x -10003-1429 x -1547
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 2,210,663, it is easier to work with a table - it's called factoring from the outside in.
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 | 2,210,663 | |
| -1 | -2,210,663 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 2,210,663.
Example:
1 x 2,210,663 = 2,210,663
and
-1 x -2,210,663 = 2,210,663
Notice both answers equal 2,210,663
With that explanation out of the way, let's continue. Next, we take the number 2,210,663 and divide it by 2:
2,210,663 ÷ 2 = 1,105,331.5
If the quotient is a whole number, then 2 and 1,105,331.5 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 | 2,210,663 | |
| -1 | -2,210,663 |
Now, we try dividing 2,210,663 by 3:
2,210,663 ÷ 3 = 736,887.6667
If the quotient is a whole number, then 3 and 736,887.6667 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 | 2,210,663 | |
| -1 | -2,210,663 |
Let's try dividing by 4:
2,210,663 ÷ 4 = 552,665.75
If the quotient is a whole number, then 4 and 552,665.75 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 | 2,210,663 | |
| -1 | 2,210,663 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 17 | 91 | 119 | 221 | 1,429 | 1,547 | 10,003 | 18,577 | 24,293 | 130,039 | 170,051 | 315,809 | 2,210,663 |
| -1 | -7 | -13 | -17 | -91 | -119 | -221 | -1,429 | -1,547 | -10,003 | -18,577 | -24,293 | -130,039 | -170,051 | -315,809 | -2,210,663 |
Here are some more numbers to try:
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