A:
Positive:
1 x 281684755 x 563369525 x 112673967 x 420425251 x 112225335 x 840851255 x 224451675 x 168174489 x 6275
Negative:
-1 x -28168475-5 x -5633695-25 x -1126739-67 x -420425-251 x -112225-335 x -84085-1255 x -22445-1675 x -16817-4489 x -6275
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 28,168,475, 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 | 28,168,475 | |
| -1 | -28,168,475 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 28,168,475.
Example:
1 x 28,168,475 = 28,168,475
and
-1 x -28,168,475 = 28,168,475
Notice both answers equal 28,168,475
With that explanation out of the way, let's continue. Next, we take the number 28,168,475 and divide it by 2:
28,168,475 ÷ 2 = 14,084,237.5
If the quotient is a whole number, then 2 and 14,084,237.5 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 | 28,168,475 | |
| -1 | -28,168,475 |
Now, we try dividing 28,168,475 by 3:
28,168,475 ÷ 3 = 9,389,491.6667
If the quotient is a whole number, then 3 and 9,389,491.6667 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 | 28,168,475 | |
| -1 | -28,168,475 |
Let's try dividing by 4:
28,168,475 ÷ 4 = 7,042,118.75
If the quotient is a whole number, then 4 and 7,042,118.75 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 | 28,168,475 | |
| -1 | 28,168,475 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 67 | 251 | 335 | 1,255 | 1,675 | 4,489 | 6,275 | 16,817 | 22,445 | 84,085 | 112,225 | 420,425 | 1,126,739 | 5,633,695 | 28,168,475 |
| -1 | -5 | -25 | -67 | -251 | -335 | -1,255 | -1,675 | -4,489 | -6,275 | -16,817 | -22,445 | -84,085 | -112,225 | -420,425 | -1,126,739 | -5,633,695 | -28,168,475 |
Here are some more numbers to try:
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