1980000

素因数分解:

$2^5\times 3^2\times 5^4\times {\mathrm{11}}^1$

素因数の和:47

約数の個数: 180

約数和(自身を含む): 7675668

約数和(自身を除く): 5695668

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 25, 30, 32, 33, 36, 40, 44, 45, 48, 50, 55, 60, 66, 72, 75, 80, 88, 90, 96, 99, 100, 110, 120, 125, 132, 144, 150, 160, 165, 176, 180, 198, 200, 220, 225, 240, 250, 264, 275, 288, 300, 330, 352, 360, 375, 396, 400, 440, 450, 480, 495, 500, 528, 550, 600, 625, 660, 720, 750, 792, 800, 825, 880, 900, 990, 1000, 1056, 1100, 1125, 1200, 1250, 1320, 1375, 1440, 1500, 1584, 1650, 1760, 1800, 1875, 1980, 2000, 2200, 2250, 2400, 2475, 2500, 2640, 2750, 3000, 3168, 3300, 3600, 3750, 3960, 4000, 4125, 4400, 4500, 4950, 5000, 5280, 5500, 5625, 6000, 6600, 6875, 7200, 7500, 7920, 8250, 8800, 9000, 9900, 10000, 11000, 11250, 12000, 12375, 13200, 13750, 15000, 15840, 16500, 18000, 19800, 20000, 20625, 22000, 22500, 24750, 26400, 27500, 30000, 33000, 36000, 39600, 41250, 44000, 45000, 49500, 55000, 60000, 61875, 66000, 79200, 82500, 90000, 99000, 110000, 123750, 132000, 165000, 180000, 198000, 220000, 247500, 330000, 396000, 495000, 660000, 990000, 1980000]

約数ペア:

[(1, 1980000), (2, 990000), (3, 660000), (4, 495000), (5, 396000), (6, 330000), (8, 247500), (9, 220000), (10, 198000), (11, 180000), (12, 165000), (15, 132000), (16, 123750), (18, 110000), (20, 99000), (22, 90000), (24, 82500), (25, 79200), (30, 66000), (32, 61875), (33, 60000), (36, 55000), (40, 49500), (44, 45000), (45, 44000), (48, 41250), (50, 39600), (55, 36000), (60, 33000), (66, 30000), (72, 27500), (75, 26400), (80, 24750), (88, 22500), (90, 22000), (96, 20625), (99, 20000), (100, 19800), (110, 18000), (120, 16500), (125, 15840), (132, 15000), (144, 13750), (150, 13200), (160, 12375), (165, 12000), (176, 11250), (180, 11000), (198, 10000), (200, 9900), (220, 9000), (225, 8800), (240, 8250), (250, 7920), (264, 7500), (275, 7200), (288, 6875), (300, 6600), (330, 6000), (352, 5625), (360, 5500), (375, 5280), (396, 5000), (400, 4950), (440, 4500), (450, 4400), (480, 4125), (495, 4000), (500, 3960), (528, 3750), (550, 3600), (600, 3300), (625, 3168), (660, 3000), (720, 2750), (750, 2640), (792, 2500), (800, 2475), (825, 2400), (880, 2250), (900, 2200), (990, 2000), (1000, 1980), (1056, 1875), (1100, 1800), (1125, 1760), (1200, 1650), (1250, 1584), (1320, 1500), (1375, 1440)]