648000

素因数分解:

$2^6\times 3^4\times 5^3$

素因数の和:39

約数の個数: 140

約数和(自身を含む): 2397252

約数和(自身を除く): 1749252

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 27, 30, 32, 36, 40, 45, 48, 50, 54, 60, 64, 72, 75, 80, 81, 90, 96, 100, 108, 120, 125, 135, 144, 150, 160, 162, 180, 192, 200, 216, 225, 240, 250, 270, 288, 300, 320, 324, 360, 375, 400, 405, 432, 450, 480, 500, 540, 576, 600, 648, 675, 720, 750, 800, 810, 864, 900, 960, 1000, 1080, 1125, 1200, 1296, 1350, 1440, 1500, 1600, 1620, 1728, 1800, 2000, 2025, 2160, 2250, 2400, 2592, 2700, 2880, 3000, 3240, 3375, 3600, 4000, 4050, 4320, 4500, 4800, 5184, 5400, 6000, 6480, 6750, 7200, 8000, 8100, 8640, 9000, 10125, 10800, 12000, 12960, 13500, 14400, 16200, 18000, 20250, 21600, 24000, 25920, 27000, 32400, 36000, 40500, 43200, 54000, 64800, 72000, 81000, 108000, 129600, 162000, 216000, 324000, 648000]

約数ペア:

[(1, 648000), (2, 324000), (3, 216000), (4, 162000), (5, 129600), (6, 108000), (8, 81000), (9, 72000), (10, 64800), (12, 54000), (15, 43200), (16, 40500), (18, 36000), (20, 32400), (24, 27000), (25, 25920), (27, 24000), (30, 21600), (32, 20250), (36, 18000), (40, 16200), (45, 14400), (48, 13500), (50, 12960), (54, 12000), (60, 10800), (64, 10125), (72, 9000), (75, 8640), (80, 8100), (81, 8000), (90, 7200), (96, 6750), (100, 6480), (108, 6000), (120, 5400), (125, 5184), (135, 4800), (144, 4500), (150, 4320), (160, 4050), (162, 4000), (180, 3600), (192, 3375), (200, 3240), (216, 3000), (225, 2880), (240, 2700), (250, 2592), (270, 2400), (288, 2250), (300, 2160), (320, 2025), (324, 2000), (360, 1800), (375, 1728), (400, 1620), (405, 1600), (432, 1500), (450, 1440), (480, 1350), (500, 1296), (540, 1200), (576, 1125), (600, 1080), (648, 1000), (675, 960), (720, 900), (750, 864), (800, 810)]