A:
Positive:
1 x 154102555 x 30820517 x 220146531 x 49710535 x 44029349 x 314495155 x 99421217 x 71015245 x 628991085 x 142031519 x 101452029 x 7595
Negative:
-1 x -15410255-5 x -3082051-7 x -2201465-31 x -497105-35 x -440293-49 x -314495-155 x -99421-217 x -71015-245 x -62899-1085 x -14203-1519 x -10145-2029 x -7595
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 15,410,255, 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 | 15,410,255 | |
| -1 | -15,410,255 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,410,255.
Example:
1 x 15,410,255 = 15,410,255
and
-1 x -15,410,255 = 15,410,255
Notice both answers equal 15,410,255
With that explanation out of the way, let's continue. Next, we take the number 15,410,255 and divide it by 2:
15,410,255 ÷ 2 = 7,705,127.5
If the quotient is a whole number, then 2 and 7,705,127.5 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 | 15,410,255 | |
| -1 | -15,410,255 |
Now, we try dividing 15,410,255 by 3:
15,410,255 ÷ 3 = 5,136,751.6667
If the quotient is a whole number, then 3 and 5,136,751.6667 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 | 15,410,255 | |
| -1 | -15,410,255 |
Let's try dividing by 4:
15,410,255 ÷ 4 = 3,852,563.75
If the quotient is a whole number, then 4 and 3,852,563.75 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 | 15,410,255 | |
| -1 | 15,410,255 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 31 | 35 | 49 | 155 | 217 | 245 | 1,085 | 1,519 | 2,029 | 7,595 | 10,145 | 14,203 | 62,899 | 71,015 | 99,421 | 314,495 | 440,293 | 497,105 | 2,201,465 | 3,082,051 | 15,410,255 |
| -1 | -5 | -7 | -31 | -35 | -49 | -155 | -217 | -245 | -1,085 | -1,519 | -2,029 | -7,595 | -10,145 | -14,203 | -62,899 | -71,015 | -99,421 | -314,495 | -440,293 | -497,105 | -2,201,465 | -3,082,051 | -15,410,255 |
Here are some more numbers to try:
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