A:
Positive:
1 x 788967055 x 1577934131 x 2545055155 x 509011431 x 1830551181 x 668052155 x 366115905 x 13361
Negative:
-1 x -78896705-5 x -15779341-31 x -2545055-155 x -509011-431 x -183055-1181 x -66805-2155 x -36611-5905 x -13361
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 78,896,705, 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 | 78,896,705 | |
| -1 | -78,896,705 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 78,896,705.
Example:
1 x 78,896,705 = 78,896,705
and
-1 x -78,896,705 = 78,896,705
Notice both answers equal 78,896,705
With that explanation out of the way, let's continue. Next, we take the number 78,896,705 and divide it by 2:
78,896,705 ÷ 2 = 39,448,352.5
If the quotient is a whole number, then 2 and 39,448,352.5 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 | 78,896,705 | |
| -1 | -78,896,705 |
Now, we try dividing 78,896,705 by 3:
78,896,705 ÷ 3 = 26,298,901.6667
If the quotient is a whole number, then 3 and 26,298,901.6667 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 | 78,896,705 | |
| -1 | -78,896,705 |
Let's try dividing by 4:
78,896,705 ÷ 4 = 19,724,176.25
If the quotient is a whole number, then 4 and 19,724,176.25 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 | 78,896,705 | |
| -1 | 78,896,705 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 155 | 431 | 1,181 | 2,155 | 5,905 | 13,361 | 36,611 | 66,805 | 183,055 | 509,011 | 2,545,055 | 15,779,341 | 78,896,705 |
| -1 | -5 | -31 | -155 | -431 | -1,181 | -2,155 | -5,905 | -13,361 | -36,611 | -66,805 | -183,055 | -509,011 | -2,545,055 | -15,779,341 | -78,896,705 |
Here are some more numbers to try:
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