A:
Positive:
1 x 16260102111 x 14781911127 x 1280323239 x 680339487 x 3338831397 x 1163932629 x 618495357 x 30353
Negative:
-1 x -162601021-11 x -14781911-127 x -1280323-239 x -680339-487 x -333883-1397 x -116393-2629 x -61849-5357 x -30353
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 162,601,021, 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 | 162,601,021 | |
| -1 | -162,601,021 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 162,601,021.
Example:
1 x 162,601,021 = 162,601,021
and
-1 x -162,601,021 = 162,601,021
Notice both answers equal 162,601,021
With that explanation out of the way, let's continue. Next, we take the number 162,601,021 and divide it by 2:
162,601,021 ÷ 2 = 81,300,510.5
If the quotient is a whole number, then 2 and 81,300,510.5 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 | 162,601,021 | |
| -1 | -162,601,021 |
Now, we try dividing 162,601,021 by 3:
162,601,021 ÷ 3 = 54,200,340.3333
If the quotient is a whole number, then 3 and 54,200,340.3333 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 | 162,601,021 | |
| -1 | -162,601,021 |
Let's try dividing by 4:
162,601,021 ÷ 4 = 40,650,255.25
If the quotient is a whole number, then 4 and 40,650,255.25 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 | 162,601,021 | |
| -1 | 162,601,021 |
If you did it right, you will end up with this table:
| 1 | 11 | 127 | 239 | 487 | 1,397 | 2,629 | 5,357 | 30,353 | 61,849 | 116,393 | 333,883 | 680,339 | 1,280,323 | 14,781,911 | 162,601,021 |
| -1 | -11 | -127 | -239 | -487 | -1,397 | -2,629 | -5,357 | -30,353 | -61,849 | -116,393 | -333,883 | -680,339 | -1,280,323 | -14,781,911 | -162,601,021 |
Here are some more numbers to try:
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