A:
Positive:
1 x 81406437 x 116294923 x 35394159 x 137977161 x 50563413 x 19711857 x 94991357 x 5999
Negative:
-1 x -8140643-7 x -1162949-23 x -353941-59 x -137977-161 x -50563-413 x -19711-857 x -9499-1357 x -5999
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 8,140,643, 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 | 8,140,643 | |
| -1 | -8,140,643 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,140,643.
Example:
1 x 8,140,643 = 8,140,643
and
-1 x -8,140,643 = 8,140,643
Notice both answers equal 8,140,643
With that explanation out of the way, let's continue. Next, we take the number 8,140,643 and divide it by 2:
8,140,643 ÷ 2 = 4,070,321.5
If the quotient is a whole number, then 2 and 4,070,321.5 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 | 8,140,643 | |
| -1 | -8,140,643 |
Now, we try dividing 8,140,643 by 3:
8,140,643 ÷ 3 = 2,713,547.6667
If the quotient is a whole number, then 3 and 2,713,547.6667 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 | 8,140,643 | |
| -1 | -8,140,643 |
Let's try dividing by 4:
8,140,643 ÷ 4 = 2,035,160.75
If the quotient is a whole number, then 4 and 2,035,160.75 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 | 8,140,643 | |
| -1 | 8,140,643 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 59 | 161 | 413 | 857 | 1,357 | 5,999 | 9,499 | 19,711 | 50,563 | 137,977 | 353,941 | 1,162,949 | 8,140,643 |
| -1 | -7 | -23 | -59 | -161 | -413 | -857 | -1,357 | -5,999 | -9,499 | -19,711 | -50,563 | -137,977 | -353,941 | -1,162,949 | -8,140,643 |
Here are some more numbers to try:
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