A:
Positive:
1 x 305873455 x 611746937 x 826685101 x 302845185 x 165337505 x 605691637 x 186853737 x 8185
Negative:
-1 x -30587345-5 x -6117469-37 x -826685-101 x -302845-185 x -165337-505 x -60569-1637 x -18685-3737 x -8185
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 30,587,345, 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 | 30,587,345 | |
| -1 | -30,587,345 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 30,587,345.
Example:
1 x 30,587,345 = 30,587,345
and
-1 x -30,587,345 = 30,587,345
Notice both answers equal 30,587,345
With that explanation out of the way, let's continue. Next, we take the number 30,587,345 and divide it by 2:
30,587,345 ÷ 2 = 15,293,672.5
If the quotient is a whole number, then 2 and 15,293,672.5 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 | 30,587,345 | |
| -1 | -30,587,345 |
Now, we try dividing 30,587,345 by 3:
30,587,345 ÷ 3 = 10,195,781.6667
If the quotient is a whole number, then 3 and 10,195,781.6667 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 | 30,587,345 | |
| -1 | -30,587,345 |
Let's try dividing by 4:
30,587,345 ÷ 4 = 7,646,836.25
If the quotient is a whole number, then 4 and 7,646,836.25 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 | 30,587,345 | |
| -1 | 30,587,345 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 101 | 185 | 505 | 1,637 | 3,737 | 8,185 | 18,685 | 60,569 | 165,337 | 302,845 | 826,685 | 6,117,469 | 30,587,345 |
| -1 | -5 | -37 | -101 | -185 | -505 | -1,637 | -3,737 | -8,185 | -18,685 | -60,569 | -165,337 | -302,845 | -826,685 | -6,117,469 | -30,587,345 |
Here are some more numbers to try:
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