A:
Positive:
1 x 1658257517 x 2368939313 x 1275582749 x 338419991 x 1822261343 x 483457637 x 2603234459 x 37189
Negative:
-1 x -165825751-7 x -23689393-13 x -12755827-49 x -3384199-91 x -1822261-343 x -483457-637 x -260323-4459 x -37189
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 165,825,751, 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 | 165,825,751 | |
| -1 | -165,825,751 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 165,825,751.
Example:
1 x 165,825,751 = 165,825,751
and
-1 x -165,825,751 = 165,825,751
Notice both answers equal 165,825,751
With that explanation out of the way, let's continue. Next, we take the number 165,825,751 and divide it by 2:
165,825,751 ÷ 2 = 82,912,875.5
If the quotient is a whole number, then 2 and 82,912,875.5 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 | 165,825,751 | |
| -1 | -165,825,751 |
Now, we try dividing 165,825,751 by 3:
165,825,751 ÷ 3 = 55,275,250.3333
If the quotient is a whole number, then 3 and 55,275,250.3333 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 | 165,825,751 | |
| -1 | -165,825,751 |
Let's try dividing by 4:
165,825,751 ÷ 4 = 41,456,437.75
If the quotient is a whole number, then 4 and 41,456,437.75 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 | 165,825,751 | |
| -1 | 165,825,751 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 49 | 91 | 343 | 637 | 4,459 | 37,189 | 260,323 | 483,457 | 1,822,261 | 3,384,199 | 12,755,827 | 23,689,393 | 165,825,751 |
| -1 | -7 | -13 | -49 | -91 | -343 | -637 | -4,459 | -37,189 | -260,323 | -483,457 | -1,822,261 | -3,384,199 | -12,755,827 | -23,689,393 | -165,825,751 |
Here are some more numbers to try:
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