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110
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LaoI guess you are asking for given the factors of 50, 51, ..., 60, which ones are odd numbers:
1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 25, 27, 29, 51, 53, 55, 57, 59
Factors of the individual numbers (odd factors emboldened):
50 := 1, 2, 5, 10, 25, 50
51 := 1, 3, 17, 51
52 := 1, 2, 4, 13, 26, 52
53 := 1, 53
54 := 1, 2, 3, 6, 9, 18, 27, 54
55 := 1, 5, 11, 55
56 := 1, 2, 4, 7, 8, 14, 28, 56
57 := 1, 3, 19, 57
58 := 1, 2, 29, 58
59 := 1, 59
60 := 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60
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Can an odd number have odd numbers of factors?
Yes. Square numbers have an odd number of factors. 49 has three factors.
How are odd and even numbers are related to their factors?
Even numbers must have 2 amongst their factors; they may have other even numbers amongst their factors. Odd numbers must not; every factor of an odd number must be odd.
What types of numbers has an odd number of factors?
Even powers of prime numbers. Square numbers have an odd number of factors.
What is another name for an odd number of factors?
Square numbers have an odd number of factors.
What number has an odd number for a factor?
All odd numbers have odd factors.
