A:
Positive:
1 x 196242555 x 39248517 x 280346535 x 56069349 x 400495173 x 113435245 x 80099463 x 42385865 x 226871211 x 162052315 x 84773241 x 6055
Negative:
-1 x -19624255-5 x -3924851-7 x -2803465-35 x -560693-49 x -400495-173 x -113435-245 x -80099-463 x -42385-865 x -22687-1211 x -16205-2315 x -8477-3241 x -6055
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 19,624,255, 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 | 19,624,255 | |
| -1 | -19,624,255 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,624,255.
Example:
1 x 19,624,255 = 19,624,255
and
-1 x -19,624,255 = 19,624,255
Notice both answers equal 19,624,255
With that explanation out of the way, let's continue. Next, we take the number 19,624,255 and divide it by 2:
19,624,255 ÷ 2 = 9,812,127.5
If the quotient is a whole number, then 2 and 9,812,127.5 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 | 19,624,255 | |
| -1 | -19,624,255 |
Now, we try dividing 19,624,255 by 3:
19,624,255 ÷ 3 = 6,541,418.3333
If the quotient is a whole number, then 3 and 6,541,418.3333 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 | 19,624,255 | |
| -1 | -19,624,255 |
Let's try dividing by 4:
19,624,255 ÷ 4 = 4,906,063.75
If the quotient is a whole number, then 4 and 4,906,063.75 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 | 19,624,255 | |
| -1 | 19,624,255 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 173 | 245 | 463 | 865 | 1,211 | 2,315 | 3,241 | 6,055 | 8,477 | 16,205 | 22,687 | 42,385 | 80,099 | 113,435 | 400,495 | 560,693 | 2,803,465 | 3,924,851 | 19,624,255 |
| -1 | -5 | -7 | -35 | -49 | -173 | -245 | -463 | -865 | -1,211 | -2,315 | -3,241 | -6,055 | -8,477 | -16,205 | -22,687 | -42,385 | -80,099 | -113,435 | -400,495 | -560,693 | -2,803,465 | -3,924,851 | -19,624,255 |
Here are some more numbers to try:
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