A:
Positive:
1 x 1515642711 x 137785713 x 116587931 x 488917143 x 105989169 x 89683263 x 57629341 x 44447403 x 376091859 x 81532893 x 52393419 x 4433
Negative:
-1 x -15156427-11 x -1377857-13 x -1165879-31 x -488917-143 x -105989-169 x -89683-263 x -57629-341 x -44447-403 x -37609-1859 x -8153-2893 x -5239-3419 x -4433
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 15,156,427, 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 | 15,156,427 | |
| -1 | -15,156,427 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,156,427.
Example:
1 x 15,156,427 = 15,156,427
and
-1 x -15,156,427 = 15,156,427
Notice both answers equal 15,156,427
With that explanation out of the way, let's continue. Next, we take the number 15,156,427 and divide it by 2:
15,156,427 ÷ 2 = 7,578,213.5
If the quotient is a whole number, then 2 and 7,578,213.5 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 | 15,156,427 | |
| -1 | -15,156,427 |
Now, we try dividing 15,156,427 by 3:
15,156,427 ÷ 3 = 5,052,142.3333
If the quotient is a whole number, then 3 and 5,052,142.3333 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 | 15,156,427 | |
| -1 | -15,156,427 |
Let's try dividing by 4:
15,156,427 ÷ 4 = 3,789,106.75
If the quotient is a whole number, then 4 and 3,789,106.75 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 | 15,156,427 | |
| -1 | 15,156,427 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 31 | 143 | 169 | 263 | 341 | 403 | 1,859 | 2,893 | 3,419 | 4,433 | 5,239 | 8,153 | 37,609 | 44,447 | 57,629 | 89,683 | 105,989 | 488,917 | 1,165,879 | 1,377,857 | 15,156,427 |
| -1 | -11 | -13 | -31 | -143 | -169 | -263 | -341 | -403 | -1,859 | -2,893 | -3,419 | -4,433 | -5,239 | -8,153 | -37,609 | -44,447 | -57,629 | -89,683 | -105,989 | -488,917 | -1,165,879 | -1,377,857 | -15,156,427 |
Here are some more numbers to try:
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