samllest factors of 250 are 50 and 5 and the sum of 50 and 5 is 50+5=55
The prime factors of 50 are: 2 and 5. 2+5 = 7
1 + 2 + 5 + 10 + 25 + 50 = 93
2 + 5 + 10 + 25 = 42
54 Factors of 54 are 2,3,3,3 (54=2x33). Sum of the factors is 11=2+3+3+3.
53
53
The answer is 50 because its factors are 1,2,5,10,25,50. When you add up the sum of 50 you get 5 which is a prime number. Also it is between 44 and 53. :)
The numbers for which the sum of its proper factors is 1 less than the number is the powers of 2; less than 50 these are: 2, 4, 8, 16 & 32.
36 The factors of 36 are : 36,18,12,9,6,4,3,2 and 1.
600 and 10 560 and 50 400 and 210
+25 and -2 , although it's really stretching things to use -2 for a factor of 50 .