A:
Positive:
1 x 2350528713 x 180809923 x 1021969127 x 185081299 x 78613619 x 379731651 x 142372921 x 8047
Negative:
-1 x -23505287-13 x -1808099-23 x -1021969-127 x -185081-299 x -78613-619 x -37973-1651 x -14237-2921 x -8047
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 23,505,287, 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 | 23,505,287 | |
| -1 | -23,505,287 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 23,505,287.
Example:
1 x 23,505,287 = 23,505,287
and
-1 x -23,505,287 = 23,505,287
Notice both answers equal 23,505,287
With that explanation out of the way, let's continue. Next, we take the number 23,505,287 and divide it by 2:
23,505,287 ÷ 2 = 11,752,643.5
If the quotient is a whole number, then 2 and 11,752,643.5 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 | 23,505,287 | |
| -1 | -23,505,287 |
Now, we try dividing 23,505,287 by 3:
23,505,287 ÷ 3 = 7,835,095.6667
If the quotient is a whole number, then 3 and 7,835,095.6667 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 | 23,505,287 | |
| -1 | -23,505,287 |
Let's try dividing by 4:
23,505,287 ÷ 4 = 5,876,321.75
If the quotient is a whole number, then 4 and 5,876,321.75 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 | 23,505,287 | |
| -1 | 23,505,287 |
If you did it right, you will end up with this table:
| 1 | 13 | 23 | 127 | 299 | 619 | 1,651 | 2,921 | 8,047 | 14,237 | 37,973 | 78,613 | 185,081 | 1,021,969 | 1,808,099 | 23,505,287 |
| -1 | -13 | -23 | -127 | -299 | -619 | -1,651 | -2,921 | -8,047 | -14,237 | -37,973 | -78,613 | -185,081 | -1,021,969 | -1,808,099 | -23,505,287 |
Here are some more numbers to try:
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