A:
Positive:
1 x 1028612655 x 2057225313 x 791240565 x 1582481509 x 2020852545 x 404173109 x 330856617 x 15545
Negative:
-1 x -102861265-5 x -20572253-13 x -7912405-65 x -1582481-509 x -202085-2545 x -40417-3109 x -33085-6617 x -15545
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 102,861,265, 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 | 102,861,265 | |
| -1 | -102,861,265 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 102,861,265.
Example:
1 x 102,861,265 = 102,861,265
and
-1 x -102,861,265 = 102,861,265
Notice both answers equal 102,861,265
With that explanation out of the way, let's continue. Next, we take the number 102,861,265 and divide it by 2:
102,861,265 ÷ 2 = 51,430,632.5
If the quotient is a whole number, then 2 and 51,430,632.5 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 | 102,861,265 | |
| -1 | -102,861,265 |
Now, we try dividing 102,861,265 by 3:
102,861,265 ÷ 3 = 34,287,088.3333
If the quotient is a whole number, then 3 and 34,287,088.3333 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 | 102,861,265 | |
| -1 | -102,861,265 |
Let's try dividing by 4:
102,861,265 ÷ 4 = 25,715,316.25
If the quotient is a whole number, then 4 and 25,715,316.25 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 | 102,861,265 | |
| -1 | 102,861,265 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 509 | 2,545 | 3,109 | 6,617 | 15,545 | 33,085 | 40,417 | 202,085 | 1,582,481 | 7,912,405 | 20,572,253 | 102,861,265 |
| -1 | -5 | -13 | -65 | -509 | -2,545 | -3,109 | -6,617 | -15,545 | -33,085 | -40,417 | -202,085 | -1,582,481 | -7,912,405 | -20,572,253 | -102,861,265 |
Here are some more numbers to try:
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