If you stick to whole numbers, then (1 x 61) is the only choice.
61 multiplied by 7 is 427.
61 is a prime number, so its only factors are 1 and 61.
1 x 61, 61 x 1
1 and 61
1 and 61
12 multiplied by 61 is 732.
390 multiplied by 61 is 23,790.
61 multiplied by 28 is 1,708.
61
1 multiplied by 40 equals 40.
61 is a prime number. Its only factors are 1 and 61.
7 multiplied by 2 multiplied by 6=84