thirty-seven factors leading to enlightenment　三十七[道]品 They are classified into seven categories: 1) the four kinds of mindfulness, 2) the four right efforts, 3) the four methods for acquiring transcendental power, 4) the five faculties, 5) the five powers, 6) the seven factors for awakening, 7) the Eightfold Noble Path. The Amida Sutra mentions 4), 5), 6), and 7).