A:
Positive:
1 x 7877595713 x 605968919 x 414610343 x 1831999247 x 318931559 x 140923817 x 964217417 x 10621
Negative:
-1 x -78775957-13 x -6059689-19 x -4146103-43 x -1831999-247 x -318931-559 x -140923-817 x -96421-7417 x -10621
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 78,775,957, 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 | 78,775,957 | |
| -1 | -78,775,957 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 78,775,957.
Example:
1 x 78,775,957 = 78,775,957
and
-1 x -78,775,957 = 78,775,957
Notice both answers equal 78,775,957
With that explanation out of the way, let's continue. Next, we take the number 78,775,957 and divide it by 2:
78,775,957 ÷ 2 = 39,387,978.5
If the quotient is a whole number, then 2 and 39,387,978.5 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 | 78,775,957 | |
| -1 | -78,775,957 |
Now, we try dividing 78,775,957 by 3:
78,775,957 ÷ 3 = 26,258,652.3333
If the quotient is a whole number, then 3 and 26,258,652.3333 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 | 78,775,957 | |
| -1 | -78,775,957 |
Let's try dividing by 4:
78,775,957 ÷ 4 = 19,693,989.25
If the quotient is a whole number, then 4 and 19,693,989.25 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 | 78,775,957 | |
| -1 | 78,775,957 |
If you did it right, you will end up with this table:
| 1 | 13 | 19 | 43 | 247 | 559 | 817 | 7,417 | 10,621 | 96,421 | 140,923 | 318,931 | 1,831,999 | 4,146,103 | 6,059,689 | 78,775,957 |
| -1 | -13 | -19 | -43 | -247 | -559 | -817 | -7,417 | -10,621 | -96,421 | -140,923 | -318,931 | -1,831,999 | -4,146,103 | -6,059,689 | -78,775,957 |
Here are some more numbers to try:
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