A:
Positive:
1 x 7829381313 x 602260119 x 412072737 x 2116049169 x 463277247 x 316979481 x 162773659 x 118807703 x 1113713211 x 243836253 x 125218567 x 9139
Negative:
-1 x -78293813-13 x -6022601-19 x -4120727-37 x -2116049-169 x -463277-247 x -316979-481 x -162773-659 x -118807-703 x -111371-3211 x -24383-6253 x -12521-8567 x -9139
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 78,293,813, 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 | 78,293,813 | |
| -1 | -78,293,813 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 78,293,813.
Example:
1 x 78,293,813 = 78,293,813
and
-1 x -78,293,813 = 78,293,813
Notice both answers equal 78,293,813
With that explanation out of the way, let's continue. Next, we take the number 78,293,813 and divide it by 2:
78,293,813 ÷ 2 = 39,146,906.5
If the quotient is a whole number, then 2 and 39,146,906.5 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 | 78,293,813 | |
| -1 | -78,293,813 |
Now, we try dividing 78,293,813 by 3:
78,293,813 ÷ 3 = 26,097,937.6667
If the quotient is a whole number, then 3 and 26,097,937.6667 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 | 78,293,813 | |
| -1 | -78,293,813 |
Let's try dividing by 4:
78,293,813 ÷ 4 = 19,573,453.25
If the quotient is a whole number, then 4 and 19,573,453.25 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 | 78,293,813 | |
| -1 | 78,293,813 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 37 | 169 | 247 | 481 | 659 | 703 | 3,211 | 6,253 | 8,567 | 9,139 | 12,521 | 24,383 | 111,371 | 118,807 | 162,773 | 316,979 | 463,277 | 2,116,049 | 4,120,727 | 6,022,601 | 78,293,813 |
| -1 | -13 | -19 | -37 | -169 | -247 | -481 | -659 | -703 | -3,211 | -6,253 | -8,567 | -9,139 | -12,521 | -24,383 | -111,371 | -118,807 | -162,773 | -316,979 | -463,277 | -2,116,049 | -4,120,727 | -6,022,601 | -78,293,813 |
Here are some more numbers to try:
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