A natural number N has four factors The sum of factors excluding the number is 31 How many values can N have?

N can have any of four values: 125, 161, 209, and 221. Factors of 125 are 1, 5, 25, and 125. Factors of 161are 1, 7, 23, and 161. Factors of 209 are 1, 11, 19, and 209. Factors of 221 are 1, 13, 17, and 221.