What is the sum of all positive integers $r$ that satisfy $$\mathop{\text{lcm}}[r,700] = 7000~?$$
Question:
What is the sum of all positive integers $r$ that satisfy $$\mathop{\text{lcm}}[r,700] = 7000~?$$
Answer:
Let's think step by step.

user
8000
What is the sum of all positive integers $r$ that satisfy $$\mathop{\text{lcm}}[r,700] = 7000~?$$
train