A:
Positive:
1 x 86152437 x 123074913 x 66271117 x 50677991 x 94673119 x 72397221 x 389831547 x 5569
Negative:
-1 x -8615243-7 x -1230749-13 x -662711-17 x -506779-91 x -94673-119 x -72397-221 x -38983-1547 x -5569
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 8,615,243, 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 | 8,615,243 | |
| -1 | -8,615,243 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 8,615,243.
Example:
1 x 8,615,243 = 8,615,243
and
-1 x -8,615,243 = 8,615,243
Notice both answers equal 8,615,243
With that explanation out of the way, let's continue. Next, we take the number 8,615,243 and divide it by 2:
8,615,243 ÷ 2 = 4,307,621.5
If the quotient is a whole number, then 2 and 4,307,621.5 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 | 8,615,243 | |
| -1 | -8,615,243 |
Now, we try dividing 8,615,243 by 3:
8,615,243 ÷ 3 = 2,871,747.6667
If the quotient is a whole number, then 3 and 2,871,747.6667 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 | 8,615,243 | |
| -1 | -8,615,243 |
Let's try dividing by 4:
8,615,243 ÷ 4 = 2,153,810.75
If the quotient is a whole number, then 4 and 2,153,810.75 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 | 8,615,243 | |
| -1 | 8,615,243 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 17 | 91 | 119 | 221 | 1,547 | 5,569 | 38,983 | 72,397 | 94,673 | 506,779 | 662,711 | 1,230,749 | 8,615,243 |
| -1 | -7 | -13 | -17 | -91 | -119 | -221 | -1,547 | -5,569 | -38,983 | -72,397 | -94,673 | -506,779 | -662,711 | -1,230,749 | -8,615,243 |
Here are some more numbers to try:
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