19800000

素因数分解:

$2^6\times 3^2\times 5^5\times {\mathrm{11}}^1$

素因数の和:54

約数の個数: 252

約数和(自身を含む): 77385672

約数和(自身を除く): 57585672

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, 64, 66, 72, 75, 80, 88, 90, 96, 99, 100, 110, 120, 125, 132, 144, 150, 160, 165, 176, 180, 192, 198, 200, 220, 225, 240, 250, 264, 275, 288, 300, 320, 330, 352, 360, 375, 396, 400, 440, 450, 480, 495, 500, 528, 550, 576, 600, 625, 660, 704, 720, 750, 792, 800, 825, 880, 900, 960, 990, 1000, 1056, 1100, 1125, 1200, 1250, 1320, 1375, 1440, 1500, 1584, 1600, 1650, 1760, 1800, 1875, 1980, 2000, 2112, 2200, 2250, 2400, 2475, 2500, 2640, 2750, 2880, 3000, 3125, 3168, 3300, 3520, 3600, 3750, 3960, 4000, 4125, 4400, 4500, 4800, 4950, 5000, 5280, 5500, 5625, 6000, 6250, 6336, 6600, 6875, 7200, 7500, 7920, 8000, 8250, 8800, 9000, 9375, 9900, 10000, 10560, 11000, 11250, 12000, 12375, 12500, 13200, 13750, 14400, 15000, 15840, 16500, 17600, 18000, 18750, 19800, 20000, 20625, 22000, 22500, 24000, 24750, 25000, 26400, 27500, 28125, 30000, 31680, 33000, 34375, 36000, 37500, 39600, 40000, 41250, 44000, 45000, 49500, 50000, 52800, 55000, 56250, 60000, 61875, 66000, 68750, 72000, 75000, 79200, 82500, 88000, 90000, 99000, 100000, 103125, 110000, 112500, 120000, 123750, 132000, 137500, 150000, 158400, 165000, 180000, 198000, 200000, 206250, 220000, 225000, 247500, 264000, 275000, 300000, 309375, 330000, 360000, 396000, 412500, 440000, 450000, 495000, 550000, 600000, 618750, 660000, 792000, 825000, 900000, 990000, 1100000, 1237500, 1320000, 1650000, 1800000, 1980000, 2200000, 2475000, 3300000, 3960000, 4950000, 6600000, 9900000, 19800000]

約数ペア:

[(1, 19800000), (2, 9900000), (3, 6600000), (4, 4950000), (5, 3960000), (6, 3300000), (8, 2475000), (9, 2200000), (10, 1980000), (11, 1800000), (12, 1650000), (15, 1320000), (16, 1237500), (18, 1100000), (20, 990000), (22, 900000), (24, 825000), (25, 792000), (30, 660000), (32, 618750), (33, 600000), (36, 550000), (40, 495000), (44, 450000), (45, 440000), (48, 412500), (50, 396000), (55, 360000), (60, 330000), (64, 309375), (66, 300000), (72, 275000), (75, 264000), (80, 247500), (88, 225000), (90, 220000), (96, 206250), (99, 200000), (100, 198000), (110, 180000), (120, 165000), (125, 158400), (132, 150000), (144, 137500), (150, 132000), (160, 123750), (165, 120000), (176, 112500), (180, 110000), (192, 103125), (198, 100000), (200, 99000), (220, 90000), (225, 88000), (240, 82500), (250, 79200), (264, 75000), (275, 72000), (288, 68750), (300, 66000), (320, 61875), (330, 60000), (352, 56250), (360, 55000), (375, 52800), (396, 50000), (400, 49500), (440, 45000), (450, 44000), (480, 41250), (495, 40000), (500, 39600), (528, 37500), (550, 36000), (576, 34375), (600, 33000), (625, 31680), (660, 30000), (704, 28125), (720, 27500), (750, 26400), (792, 25000), (800, 24750), (825, 24000), (880, 22500), (900, 22000), (960, 20625), (990, 20000), (1000, 19800), (1056, 18750), (1100, 18000), (1125, 17600), (1200, 16500), (1250, 15840), (1320, 15000), (1375, 14400), (1440, 13750), (1500, 13200), (1584, 12500), (1600, 12375), (1650, 12000), (1760, 11250), (1800, 11000), (1875, 10560), (1980, 10000), (2000, 9900), (2112, 9375), (2200, 9000), (2250, 8800), (2400, 8250), (2475, 8000), (2500, 7920), (2640, 7500), (2750, 7200), (2880, 6875), (3000, 6600), (3125, 6336), (3168, 6250), (3300, 6000), (3520, 5625), (3600, 5500), (3750, 5280), (3960, 5000), (4000, 4950), (4125, 4800), (4400, 4500)]