There is no gcf. The factors of 81 are 1, 3, 9, 27, and 81. 3, 9, 27, and 81 do not go into 256 evenly. Therefore, there are no common factors.
1 x (2)8
Take your pick: 1 x 256 = 256 2 x 128 = 256 4 x 64 = 128 8 x 32 = 256 16 x 16 = 256 (Also, for each pair of factors above, they can be both negative, eg -4 x -64 = 256.)
No, 256 is not a composite number. It is a power of 2, specifically 2 to the power of 8 (2^8), and only has 2 factors (1 and 256), making it a prime number.
The factors of 1280 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280.
Since 16 is a factor of 256, all of its factors are common.
Because they are all factors of 256
Prime factors of 256=2x2x2x2x2x2x2x2 (or 28)
The factors of 256 are: 1 2 4 8 16 32 64 128 256
The factors of 256 are: 1, 2, 4, 8, 16, 32, 64, 128, 256
The factors of 256 are 1, 2, 4, 8, 16, 32, 64, 128, and 256. Prime factors of 256 are 28. 256 = 28 so any splitting of this into two groups will work:
154 is the sum of the proper factors of 256.
256=2^8, then the factors are 2,22,23,24,25,26,27,28
256 is a perfect square, the result of 16 x 16. Half of its factors will be less than 16, half greater. But we know that all of sixteen's factors will be factors of 256. The factors of 16 are 1, 2, 4, 8, 16 Dividing them into 256 gives us the rest. 1, 2, 4, 8, 16, 32, 64, 128, 256
16, 81, 256, 625 all have five factors.
256 = 28
NIne factors: 1 2 4 8 16 32 64 128 256.