A:
Positive:
1 x 2487674777 x 3553821117 x 14633381119 x 2090483137 x 1815821959 x 2594032329 x 10681315259 x 16303
Negative:
-1 x -248767477-7 x -35538211-17 x -14633381-119 x -2090483-137 x -1815821-959 x -259403-2329 x -106813-15259 x -16303
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 248,767,477, 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 | 248,767,477 | |
| -1 | -248,767,477 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 248,767,477.
Example:
1 x 248,767,477 = 248,767,477
and
-1 x -248,767,477 = 248,767,477
Notice both answers equal 248,767,477
With that explanation out of the way, let's continue. Next, we take the number 248,767,477 and divide it by 2:
248,767,477 ÷ 2 = 124,383,738.5
If the quotient is a whole number, then 2 and 124,383,738.5 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 | 248,767,477 | |
| -1 | -248,767,477 |
Now, we try dividing 248,767,477 by 3:
248,767,477 ÷ 3 = 82,922,492.3333
If the quotient is a whole number, then 3 and 82,922,492.3333 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 | 248,767,477 | |
| -1 | -248,767,477 |
Let's try dividing by 4:
248,767,477 ÷ 4 = 62,191,869.25
If the quotient is a whole number, then 4 and 62,191,869.25 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 | 248,767,477 | |
| -1 | 248,767,477 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 137 | 959 | 2,329 | 15,259 | 16,303 | 106,813 | 259,403 | 1,815,821 | 2,090,483 | 14,633,381 | 35,538,211 | 248,767,477 |
| -1 | -7 | -17 | -119 | -137 | -959 | -2,329 | -15,259 | -16,303 | -106,813 | -259,403 | -1,815,821 | -2,090,483 | -14,633,381 | -35,538,211 | -248,767,477 |
Here are some more numbers to try:
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