1. A failure factor identification supporting apparatus comprising: a failure time point information obtaining unit that obtains information regarding a failure occurrence time point at which a failure occurs in a field device located in a field; an event information obtaining unit that obtains event information regarding, among one or more events that occur in the field, an event that occurs within a certain time range prior to the failure occurrence time point, and an event occurrence time point at which the event occurs; and a failure factor candidate output unit that outputs the event information, obtained by the event information obtaining unit, as a failure factor candidate.