A:
Positive:
1 x 4004731155 x 800946237 x 5721044535 x 114420891249 x 3206356245 x 641278743 x 458059161 x 43715
Negative:
-1 x -400473115-5 x -80094623-7 x -57210445-35 x -11442089-1249 x -320635-6245 x -64127-8743 x -45805-9161 x -43715
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 400,473,115, 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 | 400,473,115 | |
| -1 | -400,473,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 400,473,115.
Example:
1 x 400,473,115 = 400,473,115
and
-1 x -400,473,115 = 400,473,115
Notice both answers equal 400,473,115
With that explanation out of the way, let's continue. Next, we take the number 400,473,115 and divide it by 2:
400,473,115 ÷ 2 = 200,236,557.5
If the quotient is a whole number, then 2 and 200,236,557.5 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 | 400,473,115 | |
| -1 | -400,473,115 |
Now, we try dividing 400,473,115 by 3:
400,473,115 ÷ 3 = 133,491,038.3333
If the quotient is a whole number, then 3 and 133,491,038.3333 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 | 400,473,115 | |
| -1 | -400,473,115 |
Let's try dividing by 4:
400,473,115 ÷ 4 = 100,118,278.75
If the quotient is a whole number, then 4 and 100,118,278.75 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 | 400,473,115 | |
| -1 | 400,473,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 1,249 | 6,245 | 8,743 | 9,161 | 43,715 | 45,805 | 64,127 | 320,635 | 11,442,089 | 57,210,445 | 80,094,623 | 400,473,115 |
| -1 | -5 | -7 | -35 | -1,249 | -6,245 | -8,743 | -9,161 | -43,715 | -45,805 | -64,127 | -320,635 | -11,442,089 | -57,210,445 | -80,094,623 | -400,473,115 |
Here are some more numbers to try:
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