864000

素因数分解:

$2^8\times 3^3\times 5^3$

素因数の和:40

約数の個数: 144

約数和(自身を含む): 3188640

約数和(自身を除く): 2324640

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, 90, 96, 100, 108, 120, 125, 128, 135, 144, 150, 160, 180, 192, 200, 216, 225, 240, 250, 256, 270, 288, 300, 320, 360, 375, 384, 400, 432, 450, 480, 500, 540, 576, 600, 640, 675, 720, 750, 768, 800, 864, 900, 960, 1000, 1080, 1125, 1152, 1200, 1280, 1350, 1440, 1500, 1600, 1728, 1800, 1920, 2000, 2160, 2250, 2304, 2400, 2700, 2880, 3000, 3200, 3375, 3456, 3600, 3840, 4000, 4320, 4500, 4800, 5400, 5760, 6000, 6400, 6750, 6912, 7200, 8000, 8640, 9000, 9600, 10800, 11520, 12000, 13500, 14400, 16000, 17280, 18000, 19200, 21600, 24000, 27000, 28800, 32000, 34560, 36000, 43200, 48000, 54000, 57600, 72000, 86400, 96000, 108000, 144000, 172800, 216000, 288000, 432000, 864000]

約数ペア:

[(1, 864000), (2, 432000), (3, 288000), (4, 216000), (5, 172800), (6, 144000), (8, 108000), (9, 96000), (10, 86400), (12, 72000), (15, 57600), (16, 54000), (18, 48000), (20, 43200), (24, 36000), (25, 34560), (27, 32000), (30, 28800), (32, 27000), (36, 24000), (40, 21600), (45, 19200), (48, 18000), (50, 17280), (54, 16000), (60, 14400), (64, 13500), (72, 12000), (75, 11520), (80, 10800), (90, 9600), (96, 9000), (100, 8640), (108, 8000), (120, 7200), (125, 6912), (128, 6750), (135, 6400), (144, 6000), (150, 5760), (160, 5400), (180, 4800), (192, 4500), (200, 4320), (216, 4000), (225, 3840), (240, 3600), (250, 3456), (256, 3375), (270, 3200), (288, 3000), (300, 2880), (320, 2700), (360, 2400), (375, 2304), (384, 2250), (400, 2160), (432, 2000), (450, 1920), (480, 1800), (500, 1728), (540, 1600), (576, 1500), (600, 1440), (640, 1350), (675, 1280), (720, 1200), (750, 1152), (768, 1125), (800, 1080), (864, 1000), (900, 960)]