A:
Positive:
1 x 9080659913 x 698512323 x 3948113269 x 337571299 x 3037011129 x 804313497 x 259676187 x 14677
Negative:
-1 x -90806599-13 x -6985123-23 x -3948113-269 x -337571-299 x -303701-1129 x -80431-3497 x -25967-6187 x -14677
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 90,806,599, 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 | 90,806,599 | |
| -1 | -90,806,599 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 90,806,599.
Example:
1 x 90,806,599 = 90,806,599
and
-1 x -90,806,599 = 90,806,599
Notice both answers equal 90,806,599
With that explanation out of the way, let's continue. Next, we take the number 90,806,599 and divide it by 2:
90,806,599 ÷ 2 = 45,403,299.5
If the quotient is a whole number, then 2 and 45,403,299.5 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 | 90,806,599 | |
| -1 | -90,806,599 |
Now, we try dividing 90,806,599 by 3:
90,806,599 ÷ 3 = 30,268,866.3333
If the quotient is a whole number, then 3 and 30,268,866.3333 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 | 90,806,599 | |
| -1 | -90,806,599 |
Let's try dividing by 4:
90,806,599 ÷ 4 = 22,701,649.75
If the quotient is a whole number, then 4 and 22,701,649.75 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 | 90,806,599 | |
| -1 | 90,806,599 |
If you did it right, you will end up with this table:
| 1 | 13 | 23 | 269 | 299 | 1,129 | 3,497 | 6,187 | 14,677 | 25,967 | 80,431 | 303,701 | 337,571 | 3,948,113 | 6,985,123 | 90,806,599 |
| -1 | -13 | -23 | -269 | -299 | -1,129 | -3,497 | -6,187 | -14,677 | -25,967 | -80,431 | -303,701 | -337,571 | -3,948,113 | -6,985,123 | -90,806,599 |
Here are some more numbers to try:
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