21780000

素因数分解:

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

素因数の和:58

約数の個数: 270

約数和(自身を含む): 85071987

約数和(自身を除く): 63291987

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, 121, 125, 132, 144, 150, 160, 165, 176, 180, 198, 200, 220, 225, 240, 242, 250, 264, 275, 288, 300, 330, 352, 360, 363, 375, 396, 400, 440, 450, 480, 484, 495, 500, 528, 550, 600, 605, 625, 660, 720, 726, 750, 792, 800, 825, 880, 900, 968, 990, 1000, 1056, 1089, 1100, 1125, 1200, 1210, 1250, 1320, 1375, 1440, 1452, 1500, 1584, 1650, 1760, 1800, 1815, 1875, 1936, 1980, 2000, 2178, 2200, 2250, 2400, 2420, 2475, 2500, 2640, 2750, 2904, 3000, 3025, 3168, 3300, 3600, 3630, 3750, 3872, 3960, 4000, 4125, 4356, 4400, 4500, 4840, 4950, 5000, 5280, 5445, 5500, 5625, 5808, 6000, 6050, 6600, 6875, 7200, 7260, 7500, 7920, 8250, 8712, 8800, 9000, 9075, 9680, 9900, 10000, 10890, 11000, 11250, 11616, 12000, 12100, 12375, 13200, 13750, 14520, 15000, 15125, 15840, 16500, 17424, 18000, 18150, 19360, 19800, 20000, 20625, 21780, 22000, 22500, 24200, 24750, 26400, 27225, 27500, 29040, 30000, 30250, 33000, 34848, 36000, 36300, 39600, 41250, 43560, 44000, 45000, 45375, 48400, 49500, 54450, 55000, 58080, 60000, 60500, 61875, 66000, 72600, 75625, 79200, 82500, 87120, 90000, 90750, 96800, 99000, 108900, 110000, 121000, 123750, 132000, 136125, 145200, 151250, 165000, 174240, 180000, 181500, 198000, 217800, 220000, 226875, 242000, 247500, 272250, 290400, 302500, 330000, 363000, 396000, 435600, 453750, 484000, 495000, 544500, 605000, 660000, 680625, 726000, 871200, 907500, 990000, 1089000, 1210000, 1361250, 1452000, 1815000, 1980000, 2178000, 2420000, 2722500, 3630000, 4356000, 5445000, 7260000, 10890000, 21780000]

約数ペア:

[(1, 21780000), (2, 10890000), (3, 7260000), (4, 5445000), (5, 4356000), (6, 3630000), (8, 2722500), (9, 2420000), (10, 2178000), (11, 1980000), (12, 1815000), (15, 1452000), (16, 1361250), (18, 1210000), (20, 1089000), (22, 990000), (24, 907500), (25, 871200), (30, 726000), (32, 680625), (33, 660000), (36, 605000), (40, 544500), (44, 495000), (45, 484000), (48, 453750), (50, 435600), (55, 396000), (60, 363000), (66, 330000), (72, 302500), (75, 290400), (80, 272250), (88, 247500), (90, 242000), (96, 226875), (99, 220000), (100, 217800), (110, 198000), (120, 181500), (121, 180000), (125, 174240), (132, 165000), (144, 151250), (150, 145200), (160, 136125), (165, 132000), (176, 123750), (180, 121000), (198, 110000), (200, 108900), (220, 99000), (225, 96800), (240, 90750), (242, 90000), (250, 87120), (264, 82500), (275, 79200), (288, 75625), (300, 72600), (330, 66000), (352, 61875), (360, 60500), (363, 60000), (375, 58080), (396, 55000), (400, 54450), (440, 49500), (450, 48400), (480, 45375), (484, 45000), (495, 44000), (500, 43560), (528, 41250), (550, 39600), (600, 36300), (605, 36000), (625, 34848), (660, 33000), (720, 30250), (726, 30000), (750, 29040), (792, 27500), (800, 27225), (825, 26400), (880, 24750), (900, 24200), (968, 22500), (990, 22000), (1000, 21780), (1056, 20625), (1089, 20000), (1100, 19800), (1125, 19360), (1200, 18150), (1210, 18000), (1250, 17424), (1320, 16500), (1375, 15840), (1440, 15125), (1452, 15000), (1500, 14520), (1584, 13750), (1650, 13200), (1760, 12375), (1800, 12100), (1815, 12000), (1875, 11616), (1936, 11250), (1980, 11000), (2000, 10890), (2178, 10000), (2200, 9900), (2250, 9680), (2400, 9075), (2420, 9000), (2475, 8800), (2500, 8712), (2640, 8250), (2750, 7920), (2904, 7500), (3000, 7260), (3025, 7200), (3168, 6875), (3300, 6600), (3600, 6050), (3630, 6000), (3750, 5808), (3872, 5625), (3960, 5500), (4000, 5445), (4125, 5280), (4356, 5000), (4400, 4950), (4500, 4840)]