A:
Positive:
1 x 1621007455 x 32420149191 x 848695269 x 602605631 x 256895955 x 1697391345 x 1205213155 x 51379
Negative:
-1 x -162100745-5 x -32420149-191 x -848695-269 x -602605-631 x -256895-955 x -169739-1345 x -120521-3155 x -51379
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 162,100,745, 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 | 162,100,745 | |
| -1 | -162,100,745 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 162,100,745.
Example:
1 x 162,100,745 = 162,100,745
and
-1 x -162,100,745 = 162,100,745
Notice both answers equal 162,100,745
With that explanation out of the way, let's continue. Next, we take the number 162,100,745 and divide it by 2:
162,100,745 ÷ 2 = 81,050,372.5
If the quotient is a whole number, then 2 and 81,050,372.5 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 | 162,100,745 | |
| -1 | -162,100,745 |
Now, we try dividing 162,100,745 by 3:
162,100,745 ÷ 3 = 54,033,581.6667
If the quotient is a whole number, then 3 and 54,033,581.6667 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 | 162,100,745 | |
| -1 | -162,100,745 |
Let's try dividing by 4:
162,100,745 ÷ 4 = 40,525,186.25
If the quotient is a whole number, then 4 and 40,525,186.25 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 | 162,100,745 | |
| -1 | 162,100,745 |
If you did it right, you will end up with this table:
| 1 | 5 | 191 | 269 | 631 | 955 | 1,345 | 3,155 | 51,379 | 120,521 | 169,739 | 256,895 | 602,605 | 848,695 | 32,420,149 | 162,100,745 |
| -1 | -5 | -191 | -269 | -631 | -955 | -1,345 | -3,155 | -51,379 | -120,521 | -169,739 | -256,895 | -602,605 | -848,695 | -32,420,149 | -162,100,745 |
Here are some more numbers to try:
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