19 numbers
Factors for 24 are: 1, 2, 3, 4, 6, 8, 12, 24
Factors for 30 are: 1, 2, 3, 5, 6, 10, 15, 30
Factors for 36 are: 1, 2, 3, 4, 6, 9, 12, 18, 36
Factors for 40 are: 1, 2, 4, 5, 8, 10, 20, 40
Factors for 42 are: 1, 2, 3, 6, 7, 14, 21, 42
Factors for 48 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
Factors for 54 are: 1, 2, 3, 6, 9, 18, 27, 54
Factors for 56 are: 1, 2, 4, 7, 8, 14, 28, 56
Factors for 60 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
Factors for 66 are: 1, 2, 3, 6, 11, 22, 33, 66
Factors for 70 are: 1, 2, 5, 7, 10, 14, 35, 70
Factors for 72 are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
Factors for 78 are: 1, 2, 3, 6, 13, 26, 39, 78
Factors for 80 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80
Factors for 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
Factors for 88 are: 1, 2, 4, 8, 11, 22, 44, 88
Factors for 90 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
Factors for 96 are: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96
Factors for 100 are: 1, 2, 4, 5, 10, 20, 25, 50, 100
360, 420 and 480 each have 24 factors.
144, 121 and 100
the number is 350 the factors is 175 and 2
-1
1 is the number less than fifty with the fewest number of factors. All other numbers have at least two factors (1, and the integer itself).
There are 12 numbers less than 150 which have an odd number of factors: 1,4,9,16,25,36,49,64,81,100,121,144.
840
36
36
The three greatest whole numbers less than 200 that each have an odd number of factors are 144, 169 and 196.
the number 90 has the most factors under 100
360, 420 and 480 each have 24 factors.
There is no whole number less than zero.
The numbers 60, 72, 84, 90, and 96 each have 12 factors.
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