A:
Positive:
1 x 315860517 x 451229317 x 1858003119 x 265429433 x 72947613 x 515273031 x 104214291 x 7361
Negative:
-1 x -31586051-7 x -4512293-17 x -1858003-119 x -265429-433 x -72947-613 x -51527-3031 x -10421-4291 x -7361
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 31,586,051, 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 | 31,586,051 | |
| -1 | -31,586,051 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 31,586,051.
Example:
1 x 31,586,051 = 31,586,051
and
-1 x -31,586,051 = 31,586,051
Notice both answers equal 31,586,051
With that explanation out of the way, let's continue. Next, we take the number 31,586,051 and divide it by 2:
31,586,051 ÷ 2 = 15,793,025.5
If the quotient is a whole number, then 2 and 15,793,025.5 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 | 31,586,051 | |
| -1 | -31,586,051 |
Now, we try dividing 31,586,051 by 3:
31,586,051 ÷ 3 = 10,528,683.6667
If the quotient is a whole number, then 3 and 10,528,683.6667 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 | 31,586,051 | |
| -1 | -31,586,051 |
Let's try dividing by 4:
31,586,051 ÷ 4 = 7,896,512.75
If the quotient is a whole number, then 4 and 7,896,512.75 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 | 31,586,051 | |
| -1 | 31,586,051 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 433 | 613 | 3,031 | 4,291 | 7,361 | 10,421 | 51,527 | 72,947 | 265,429 | 1,858,003 | 4,512,293 | 31,586,051 |
| -1 | -7 | -17 | -119 | -433 | -613 | -3,031 | -4,291 | -7,361 | -10,421 | -51,527 | -72,947 | -265,429 | -1,858,003 | -4,512,293 | -31,586,051 |
Here are some more numbers to try:
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