1. The problem asks us to find all factors of 40 from the given numbers 1 to 30. 2. A factor of a number is an integer that divides the number exactly without leaving a remainder. 3. To find factors of 40, we check which numbers divide 40 evenly. 4. The number 40 can be factored as $$40 = 1 \times 40 = 2 \times 20 = 4 \times 10 = 5 \times 8$$. 5. From the given numbers 1 to 30, the factors of 40 are 1, 2, 4, 5, 8, 10, and 20. 6. Numbers like 3, 6, 7, 9, etc., do not divide 40 evenly and are not factors. Final answer: The factors of 40 from the list are **1, 2, 4, 5, 8, 10, 20**.