A:
Positive:
1 x 13981455 x 2796297 x 19973535 x 3994743 x 32515215 x 6503301 x 4645929 x 1505
Negative:
-1 x -1398145-5 x -279629-7 x -199735-35 x -39947-43 x -32515-215 x -6503-301 x -4645-929 x -1505
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 1,398,145, 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 | 1,398,145 | |
| -1 | -1,398,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,398,145.
Example:
1 x 1,398,145 = 1,398,145
and
-1 x -1,398,145 = 1,398,145
Notice both answers equal 1,398,145
With that explanation out of the way, let's continue. Next, we take the number 1,398,145 and divide it by 2:
1,398,145 ÷ 2 = 699,072.5
If the quotient is a whole number, then 2 and 699,072.5 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 | 1,398,145 | |
| -1 | -1,398,145 |
Now, we try dividing 1,398,145 by 3:
1,398,145 ÷ 3 = 466,048.3333
If the quotient is a whole number, then 3 and 466,048.3333 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 | 1,398,145 | |
| -1 | -1,398,145 |
Let's try dividing by 4:
1,398,145 ÷ 4 = 349,536.25
If the quotient is a whole number, then 4 and 349,536.25 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 | 1,398,145 | |
| -1 | 1,398,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 43 | 215 | 301 | 929 | 1,505 | 4,645 | 6,503 | 32,515 | 39,947 | 199,735 | 279,629 | 1,398,145 |
| -1 | -5 | -7 | -35 | -43 | -215 | -301 | -929 | -1,505 | -4,645 | -6,503 | -32,515 | -39,947 | -199,735 | -279,629 | -1,398,145 |
Here are some more numbers to try:
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