2468 has two odd factors: 1 and 617
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Yes, the factors of all odd numbers are odd numbers.
12345/5 = 2469 so the numbers are:2467, 2468, 2469, 2470, 2471
The sum of an odd number of odd numbers will be odd.
Half of all square numbers are odd. They are the ones which are the square of an odd number.
The product of multiplication results in a number that has all of the factors of the two numbers being multiplied. All even numbers have the prime factor 2. Since no odd number has the factor 2, no product of those numbers can have it. So: - Odd numbers times odd numbers produce odd numbers. - Odd numbers times even numbers produce even numbers. - Even numbers times even numbers produce even numbers.