The factors of the square numbers below 100 are as follows:
1: 1
4: 1, 2, 4
9: 1, 3, 9
16: 1, 2, 4, 8, 16
25: 1, 5, 25
36: 1, 2, 3, 4, 6, 9, 12, 18, 36
49: 1, 7, 49
64: 1, 2, 4, 8, 16, 32, 64
81: 1, 3, 9, 27, 81
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With the numbers: 0,1,2,3,4,5,6,7,8,9 there are 10000 four letter combination's - ten options for the first number times ten options for the second number times ten options for the third number and so on. :)
Numbers without factors are PRIME Numbers. Taking the first ten numbers. 1,2,3,4,5,6,7,8,9,10. The prime numbers are 2,3,5,7, they have no factors. 4,6,8,9,10. Are not prime numbers as they have factors. 4 has a factor of '2' 6 has factors of '2 & 3'. 8 has factors of' 2 & 4'. or' 2,2,2.' 9 has factors of '3,3', 10 has factors of '2 5.' '1' is unique
8 only has four factors.
48 is divisible by ten factors. There is an infinite amount of numbers divisible by 48.
17 is a prime number and only has two factors, one and itself.