A:
Positive:
1 x 121105455 x 242210917 x 71238529 x 41760585 x 142477145 x 83521289 x 41905493 x 245651445 x 83812465 x 4913
Negative:
-1 x -12110545-5 x -2422109-17 x -712385-29 x -417605-85 x -142477-145 x -83521-289 x -41905-493 x -24565-1445 x -8381-2465 x -4913
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 12,110,545, 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 | 12,110,545 | |
| -1 | -12,110,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 12,110,545.
Example:
1 x 12,110,545 = 12,110,545
and
-1 x -12,110,545 = 12,110,545
Notice both answers equal 12,110,545
With that explanation out of the way, let's continue. Next, we take the number 12,110,545 and divide it by 2:
12,110,545 ÷ 2 = 6,055,272.5
If the quotient is a whole number, then 2 and 6,055,272.5 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 | 12,110,545 | |
| -1 | -12,110,545 |
Now, we try dividing 12,110,545 by 3:
12,110,545 ÷ 3 = 4,036,848.3333
If the quotient is a whole number, then 3 and 4,036,848.3333 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 | 12,110,545 | |
| -1 | -12,110,545 |
Let's try dividing by 4:
12,110,545 ÷ 4 = 3,027,636.25
If the quotient is a whole number, then 4 and 3,027,636.25 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 | 12,110,545 | |
| -1 | 12,110,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 29 | 85 | 145 | 289 | 493 | 1,445 | 2,465 | 4,913 | 8,381 | 24,565 | 41,905 | 83,521 | 142,477 | 417,605 | 712,385 | 2,422,109 | 12,110,545 |
| -1 | -5 | -17 | -29 | -85 | -145 | -289 | -493 | -1,445 | -2,465 | -4,913 | -8,381 | -24,565 | -41,905 | -83,521 | -142,477 | -417,605 | -712,385 | -2,422,109 | -12,110,545 |
Here are some more numbers to try:
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