The proper factors of 16 are 1,2,4, and 8 :)
The proper factors of 220 are 2,4,5,10,11,20,22,44,55,110
Prime numbers don't have proper factors.
1, 5, 7, and 35 are the factors of 35. The proper factors are 5 and 7.
13 is a prime number so the only factors are 1 and itself. Prime numbers have no proper factors.
1 2 4 8 16 23 46 47 92 94 184 188 368 376 752 1081 2162 4324 8648 17296
No. Some proper factors are prime.
No, no prime number has proper factors.
One has no proper factors.
1 doesn't have proper factors.
Prime numbers don't have proper factors.
Prime numbers don't have proper factors.
The proper factors of 22 are 2 and 11.
Prime numbers don't have proper factors.
Prime numbers don't have proper factors.
The proper factors of 26 are 2 and 13
Zero doesn't have any proper factors.