A:
Positive:
1 x 151015711 x 13728723 x 6565947 x 32131127 x 11891253 x 5969517 x 29211081 x 1397
Negative:
-1 x -1510157-11 x -137287-23 x -65659-47 x -32131-127 x -11891-253 x -5969-517 x -2921-1081 x -1397
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 1,510,157, 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 | 1,510,157 | |
| -1 | -1,510,157 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,510,157.
Example:
1 x 1,510,157 = 1,510,157
and
-1 x -1,510,157 = 1,510,157
Notice both answers equal 1,510,157
With that explanation out of the way, let's continue. Next, we take the number 1,510,157 and divide it by 2:
1,510,157 ÷ 2 = 755,078.5
If the quotient is a whole number, then 2 and 755,078.5 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 | 1,510,157 | |
| -1 | -1,510,157 |
Now, we try dividing 1,510,157 by 3:
1,510,157 ÷ 3 = 503,385.6667
If the quotient is a whole number, then 3 and 503,385.6667 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 | 1,510,157 | |
| -1 | -1,510,157 |
Let's try dividing by 4:
1,510,157 ÷ 4 = 377,539.25
If the quotient is a whole number, then 4 and 377,539.25 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 | 1,510,157 | |
| -1 | 1,510,157 |
If you did it right, you will end up with this table:
| 1 | 11 | 23 | 47 | 127 | 253 | 517 | 1,081 | 1,397 | 2,921 | 5,969 | 11,891 | 32,131 | 65,659 | 137,287 | 1,510,157 |
| -1 | -11 | -23 | -47 | -127 | -253 | -517 | -1,081 | -1,397 | -2,921 | -5,969 | -11,891 | -32,131 | -65,659 | -137,287 | -1,510,157 |
Here are some more numbers to try:
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