1 + 15 + 3 + 5 = 24
1, 3, 5, 9, 15, 45 (sum = 78).
The odd factors of 70 are: 1, 5, 7, and 35. The sum of these factors is 48.
105 is the sum
28
There are 59 possible sets of 4 factors and I am certainly not prepared to list them all.2, 3, 4, 12 has the smallest sum (21) in the required range.4, 5, 10, 15 has the largest sum (34) in the required range.There are 59 possible sets of 4 factors and I am certainly not prepared to list them all.2, 3, 4, 12 has the smallest sum (21) in the required range.4, 5, 10, 15 has the largest sum (34) in the required range.There are 59 possible sets of 4 factors and I am certainly not prepared to list them all.2, 3, 4, 12 has the smallest sum (21) in the required range.4, 5, 10, 15 has the largest sum (34) in the required range.There are 59 possible sets of 4 factors and I am certainly not prepared to list them all.2, 3, 4, 12 has the smallest sum (21) in the required range.4, 5, 10, 15 has the largest sum (34) in the required range.
Six.
1, 3, 5, 9, 15, 45 (sum = 78).
60
1 + 3 + 5 + 15 = 24
The sum of all the positive factors of 12 is 28.
1 + 2 + 3 + 5 + 6 + 10 + 15 + 30 = 62.
The sum of the positive whole-number factors of 30 is 72.
13
5 and 3.
The odd factors of 70 are: 1, 5, 7, and 35. The sum of these factors is 48.
105 is the sum
105 is the sum