A:
Positive:
1 x 12826084711 x 1166007713 x 986621967 x 1914341121 x 1060007143 x 896929737 x 174031871 x 1472571217 x 1053911573 x 815398107 x 158219581 x 13387
Negative:
-1 x -128260847-11 x -11660077-13 x -9866219-67 x -1914341-121 x -1060007-143 x -896929-737 x -174031-871 x -147257-1217 x -105391-1573 x -81539-8107 x -15821-9581 x -13387
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 128,260,847, 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 | 128,260,847 | |
| -1 | -128,260,847 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 128,260,847.
Example:
1 x 128,260,847 = 128,260,847
and
-1 x -128,260,847 = 128,260,847
Notice both answers equal 128,260,847
With that explanation out of the way, let's continue. Next, we take the number 128,260,847 and divide it by 2:
128,260,847 ÷ 2 = 64,130,423.5
If the quotient is a whole number, then 2 and 64,130,423.5 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 | 128,260,847 | |
| -1 | -128,260,847 |
Now, we try dividing 128,260,847 by 3:
128,260,847 ÷ 3 = 42,753,615.6667
If the quotient is a whole number, then 3 and 42,753,615.6667 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 | 128,260,847 | |
| -1 | -128,260,847 |
Let's try dividing by 4:
128,260,847 ÷ 4 = 32,065,211.75
If the quotient is a whole number, then 4 and 32,065,211.75 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 | 128,260,847 | |
| -1 | 128,260,847 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 67 | 121 | 143 | 737 | 871 | 1,217 | 1,573 | 8,107 | 9,581 | 13,387 | 15,821 | 81,539 | 105,391 | 147,257 | 174,031 | 896,929 | 1,060,007 | 1,914,341 | 9,866,219 | 11,660,077 | 128,260,847 |
| -1 | -11 | -13 | -67 | -121 | -143 | -737 | -871 | -1,217 | -1,573 | -8,107 | -9,581 | -13,387 | -15,821 | -81,539 | -105,391 | -147,257 | -174,031 | -896,929 | -1,060,007 | -1,914,341 | -9,866,219 | -11,660,077 | -128,260,847 |
Here are some more numbers to try:
Try the factor calculator