A:
Positive:
1 x 4000300997 x 5714715723 x 17392613161 x 2484659617 x 6483474027 x 993374319 x 9262114191 x 28189
Negative:
-1 x -400030099-7 x -57147157-23 x -17392613-161 x -2484659-617 x -648347-4027 x -99337-4319 x -92621-14191 x -28189
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 400,030,099, 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 | 400,030,099 | |
| -1 | -400,030,099 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 400,030,099.
Example:
1 x 400,030,099 = 400,030,099
and
-1 x -400,030,099 = 400,030,099
Notice both answers equal 400,030,099
With that explanation out of the way, let's continue. Next, we take the number 400,030,099 and divide it by 2:
400,030,099 ÷ 2 = 200,015,049.5
If the quotient is a whole number, then 2 and 200,015,049.5 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 | 400,030,099 | |
| -1 | -400,030,099 |
Now, we try dividing 400,030,099 by 3:
400,030,099 ÷ 3 = 133,343,366.3333
If the quotient is a whole number, then 3 and 133,343,366.3333 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 | 400,030,099 | |
| -1 | -400,030,099 |
Let's try dividing by 4:
400,030,099 ÷ 4 = 100,007,524.75
If the quotient is a whole number, then 4 and 100,007,524.75 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 | 400,030,099 | |
| -1 | 400,030,099 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 161 | 617 | 4,027 | 4,319 | 14,191 | 28,189 | 92,621 | 99,337 | 648,347 | 2,484,659 | 17,392,613 | 57,147,157 | 400,030,099 |
| -1 | -7 | -23 | -161 | -617 | -4,027 | -4,319 | -14,191 | -28,189 | -92,621 | -99,337 | -648,347 | -2,484,659 | -17,392,613 | -57,147,157 | -400,030,099 |
Here are some more numbers to try:
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