A:
Positive:
1 x 7837680123 x 340768767 x 1169803181 x 433021281 x 2789211541 x 508614163 x 188276463 x 12127
Negative:
-1 x -78376801-23 x -3407687-67 x -1169803-181 x -433021-281 x -278921-1541 x -50861-4163 x -18827-6463 x -12127
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 78,376,801, 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 | 78,376,801 | |
| -1 | -78,376,801 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 78,376,801.
Example:
1 x 78,376,801 = 78,376,801
and
-1 x -78,376,801 = 78,376,801
Notice both answers equal 78,376,801
With that explanation out of the way, let's continue. Next, we take the number 78,376,801 and divide it by 2:
78,376,801 ÷ 2 = 39,188,400.5
If the quotient is a whole number, then 2 and 39,188,400.5 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 | 78,376,801 | |
| -1 | -78,376,801 |
Now, we try dividing 78,376,801 by 3:
78,376,801 ÷ 3 = 26,125,600.3333
If the quotient is a whole number, then 3 and 26,125,600.3333 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 | 78,376,801 | |
| -1 | -78,376,801 |
Let's try dividing by 4:
78,376,801 ÷ 4 = 19,594,200.25
If the quotient is a whole number, then 4 and 19,594,200.25 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 | 78,376,801 | |
| -1 | 78,376,801 |
If you did it right, you will end up with this table:
| 1 | 23 | 67 | 181 | 281 | 1,541 | 4,163 | 6,463 | 12,127 | 18,827 | 50,861 | 278,921 | 433,021 | 1,169,803 | 3,407,687 | 78,376,801 |
| -1 | -23 | -67 | -181 | -281 | -1,541 | -4,163 | -6,463 | -12,127 | -18,827 | -50,861 | -278,921 | -433,021 | -1,169,803 | -3,407,687 | -78,376,801 |
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