20817120

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1399}}^1$

素因数の和:1448

約数の個数: 96

約数和(自身を含む): 67737600

約数和(自身を除く): 46920480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 80, 93, 96, 120, 124, 155, 160, 186, 240, 248, 310, 372, 465, 480, 496, 620, 744, 930, 992, 1240, 1399, 1488, 1860, 2480, 2798, 2976, 3720, 4197, 4960, 5596, 6995, 7440, 8394, 11192, 13990, 14880, 16788, 20985, 22384, 27980, 33576, 41970, 43369, 44768, 55960, 67152, 83940, 86738, 111920, 130107, 134304, 167880, 173476, 216845, 223840, 260214, 335760, 346952, 433690, 520428, 650535, 671520, 693904, 867380, 1040856, 1301070, 1387808, 1734760, 2081712, 2602140, 3469520, 4163424, 5204280, 6939040, 10408560, 20817120]

約数ペア:

[(1, 20817120), (2, 10408560), (3, 6939040), (4, 5204280), (5, 4163424), (6, 3469520), (8, 2602140), (10, 2081712), (12, 1734760), (15, 1387808), (16, 1301070), (20, 1040856), (24, 867380), (30, 693904), (31, 671520), (32, 650535), (40, 520428), (48, 433690), (60, 346952), (62, 335760), (80, 260214), (93, 223840), (96, 216845), (120, 173476), (124, 167880), (155, 134304), (160, 130107), (186, 111920), (240, 86738), (248, 83940), (310, 67152), (372, 55960), (465, 44768), (480, 43369), (496, 41970), (620, 33576), (744, 27980), (930, 22384), (992, 20985), (1240, 16788), (1399, 14880), (1488, 13990), (1860, 11192), (2480, 8394), (2798, 7440), (2976, 6995), (3720, 5596), (4197, 4960)]