81445680

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 240

約数和(自身を含む): 292481280

約数和(自身を除く): 211035600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 41, 45, 48, 60, 62, 72, 80, 82, 89, 90, 93, 120, 123, 124, 144, 155, 164, 178, 180, 186, 205, 240, 246, 248, 267, 279, 310, 328, 356, 360, 369, 372, 410, 445, 465, 492, 496, 534, 558, 615, 620, 656, 712, 720, 738, 744, 801, 820, 890, 930, 984, 1068, 1116, 1230, 1240, 1271, 1335, 1395, 1424, 1476, 1488, 1602, 1640, 1780, 1845, 1860, 1968, 2136, 2232, 2460, 2480, 2542, 2670, 2759, 2790, 2952, 3204, 3280, 3560, 3649, 3690, 3720, 3813, 4005, 4272, 4464, 4920, 5084, 5340, 5518, 5580, 5904, 6355, 6408, 7120, 7298, 7380, 7440, 7626, 8010, 8277, 9840, 10168, 10680, 10947, 11036, 11160, 11439, 12710, 12816, 13795, 14596, 14760, 15252, 16020, 16554, 18245, 19065, 20336, 21360, 21894, 22072, 22320, 22878, 24831, 25420, 27590, 29192, 29520, 30504, 32040, 32841, 33108, 36490, 38130, 41385, 43788, 44144, 45756, 49662, 50840, 54735, 55180, 57195, 58384, 61008, 64080, 65682, 66216, 72980, 76260, 82770, 87576, 91512, 99324, 101680, 109470, 110360, 113119, 114390, 124155, 131364, 132432, 145960, 152520, 164205, 165540, 175152, 183024, 198648, 218940, 220720, 226238, 228780, 248310, 262728, 291920, 305040, 328410, 331080, 339357, 397296, 437880, 452476, 457560, 496620, 525456, 565595, 656820, 662160, 678714, 875760, 904952, 915120, 993240, 1018071, 1131190, 1313640, 1357428, 1696785, 1809904, 1986480, 2036142, 2262380, 2627280, 2714856, 3393570, 4072284, 4524760, 5090355, 5429712, 6787140, 8144568, 9049520, 10180710, 13574280, 16289136, 20361420, 27148560, 40722840, 81445680]

約数ペア:

[(1, 81445680), (2, 40722840), (3, 27148560), (4, 20361420), (5, 16289136), (6, 13574280), (8, 10180710), (9, 9049520), (10, 8144568), (12, 6787140), (15, 5429712), (16, 5090355), (18, 4524760), (20, 4072284), (24, 3393570), (30, 2714856), (31, 2627280), (36, 2262380), (40, 2036142), (41, 1986480), (45, 1809904), (48, 1696785), (60, 1357428), (62, 1313640), (72, 1131190), (80, 1018071), (82, 993240), (89, 915120), (90, 904952), (93, 875760), (120, 678714), (123, 662160), (124, 656820), (144, 565595), (155, 525456), (164, 496620), (178, 457560), (180, 452476), (186, 437880), (205, 397296), (240, 339357), (246, 331080), (248, 328410), (267, 305040), (279, 291920), (310, 262728), (328, 248310), (356, 228780), (360, 226238), (369, 220720), (372, 218940), (410, 198648), (445, 183024), (465, 175152), (492, 165540), (496, 164205), (534, 152520), (558, 145960), (615, 132432), (620, 131364), (656, 124155), (712, 114390), (720, 113119), (738, 110360), (744, 109470), (801, 101680), (820, 99324), (890, 91512), (930, 87576), (984, 82770), (1068, 76260), (1116, 72980), (1230, 66216), (1240, 65682), (1271, 64080), (1335, 61008), (1395, 58384), (1424, 57195), (1476, 55180), (1488, 54735), (1602, 50840), (1640, 49662), (1780, 45756), (1845, 44144), (1860, 43788), (1968, 41385), (2136, 38130), (2232, 36490), (2460, 33108), (2480, 32841), (2542, 32040), (2670, 30504), (2759, 29520), (2790, 29192), (2952, 27590), (3204, 25420), (3280, 24831), (3560, 22878), (3649, 22320), (3690, 22072), (3720, 21894), (3813, 21360), (4005, 20336), (4272, 19065), (4464, 18245), (4920, 16554), (5084, 16020), (5340, 15252), (5518, 14760), (5580, 14596), (5904, 13795), (6355, 12816), (6408, 12710), (7120, 11439), (7298, 11160), (7380, 11036), (7440, 10947), (7626, 10680), (8010, 10168), (8277, 9840)]