A:
Positive:
1 x 2031540055 x 4063080131 x 6553355155 x 1310671431 x 4713552155 x 942713041 x 6680513361 x 15205
Negative:
-1 x -203154005-5 x -40630801-31 x -6553355-155 x -1310671-431 x -471355-2155 x -94271-3041 x -66805-13361 x -15205
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 203,154,005, 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 | 203,154,005 | |
| -1 | -203,154,005 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 203,154,005.
Example:
1 x 203,154,005 = 203,154,005
and
-1 x -203,154,005 = 203,154,005
Notice both answers equal 203,154,005
With that explanation out of the way, let's continue. Next, we take the number 203,154,005 and divide it by 2:
203,154,005 ÷ 2 = 101,577,002.5
If the quotient is a whole number, then 2 and 101,577,002.5 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 | 203,154,005 | |
| -1 | -203,154,005 |
Now, we try dividing 203,154,005 by 3:
203,154,005 ÷ 3 = 67,718,001.6667
If the quotient is a whole number, then 3 and 67,718,001.6667 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 | 203,154,005 | |
| -1 | -203,154,005 |
Let's try dividing by 4:
203,154,005 ÷ 4 = 50,788,501.25
If the quotient is a whole number, then 4 and 50,788,501.25 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 | 203,154,005 | |
| -1 | 203,154,005 |
If you did it right, you will end up with this table:
| 1 | 5 | 31 | 155 | 431 | 2,155 | 3,041 | 13,361 | 15,205 | 66,805 | 94,271 | 471,355 | 1,310,671 | 6,553,355 | 40,630,801 | 203,154,005 |
| -1 | -5 | -31 | -155 | -431 | -2,155 | -3,041 | -13,361 | -15,205 | -66,805 | -94,271 | -471,355 | -1,310,671 | -6,553,355 | -40,630,801 | -203,154,005 |
Here are some more numbers to try:
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