A:
Positive:
1 x 12987597 x 18553711 x 11806977 x 16867101 x 12859167 x 7777707 x 18371111 x 1169
Negative:
-1 x -1298759-7 x -185537-11 x -118069-77 x -16867-101 x -12859-167 x -7777-707 x -1837-1111 x -1169
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 1,298,759, 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 | 1,298,759 | |
| -1 | -1,298,759 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,298,759.
Example:
1 x 1,298,759 = 1,298,759
and
-1 x -1,298,759 = 1,298,759
Notice both answers equal 1,298,759
With that explanation out of the way, let's continue. Next, we take the number 1,298,759 and divide it by 2:
1,298,759 ÷ 2 = 649,379.5
If the quotient is a whole number, then 2 and 649,379.5 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 | 1,298,759 | |
| -1 | -1,298,759 |
Now, we try dividing 1,298,759 by 3:
1,298,759 ÷ 3 = 432,919.6667
If the quotient is a whole number, then 3 and 432,919.6667 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 | 1,298,759 | |
| -1 | -1,298,759 |
Let's try dividing by 4:
1,298,759 ÷ 4 = 324,689.75
If the quotient is a whole number, then 4 and 324,689.75 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 | 1,298,759 | |
| -1 | 1,298,759 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 101 | 167 | 707 | 1,111 | 1,169 | 1,837 | 7,777 | 12,859 | 16,867 | 118,069 | 185,537 | 1,298,759 |
| -1 | -7 | -11 | -77 | -101 | -167 | -707 | -1,111 | -1,169 | -1,837 | -7,777 | -12,859 | -16,867 | -118,069 | -185,537 | -1,298,759 |
Here are some more numbers to try:
Try the factor calculator