1081280000

素因数分解:

$2^9\times 5^4\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:178

約数の個数: 200

約数和(自身を含む): 2812349760

約数和(自身を除く): 1731069760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 80, 100, 109, 124, 125, 128, 155, 160, 200, 218, 248, 250, 256, 310, 320, 400, 436, 496, 500, 512, 545, 620, 625, 640, 775, 800, 872, 992, 1000, 1090, 1240, 1250, 1280, 1550, 1600, 1744, 1984, 2000, 2180, 2480, 2500, 2560, 2725, 3100, 3200, 3379, 3488, 3875, 3968, 4000, 4360, 4960, 5000, 5450, 6200, 6400, 6758, 6976, 7750, 7936, 8000, 8720, 9920, 10000, 10900, 12400, 12800, 13516, 13625, 13952, 15500, 15872, 16000, 16895, 17440, 19375, 19840, 20000, 21800, 24800, 27032, 27250, 27904, 31000, 32000, 33790, 34880, 38750, 39680, 40000, 43600, 49600, 54064, 54500, 55808, 62000, 64000, 67580, 68125, 69760, 77500, 79360, 80000, 84475, 87200, 99200, 108128, 109000, 124000, 135160, 136250, 139520, 155000, 160000, 168950, 174400, 198400, 216256, 218000, 248000, 270320, 272500, 279040, 310000, 320000, 337900, 348800, 396800, 422375, 432512, 436000, 496000, 540640, 545000, 620000, 675800, 697600, 844750, 865024, 872000, 992000, 1081280, 1090000, 1240000, 1351600, 1395200, 1689500, 1730048, 1744000, 1984000, 2111875, 2162560, 2180000, 2480000, 2703200, 3379000, 3488000, 4223750, 4325120, 4360000, 4960000, 5406400, 6758000, 6976000, 8447500, 8650240, 8720000, 9920000, 10812800, 13516000, 16895000, 17440000, 21625600, 27032000, 33790000, 34880000, 43251200, 54064000, 67580000, 108128000, 135160000, 216256000, 270320000, 540640000, 1081280000]

約数ペア:

[(1, 1081280000), (2, 540640000), (4, 270320000), (5, 216256000), (8, 135160000), (10, 108128000), (16, 67580000), (20, 54064000), (25, 43251200), (31, 34880000), (32, 33790000), (40, 27032000), (50, 21625600), (62, 17440000), (64, 16895000), (80, 13516000), (100, 10812800), (109, 9920000), (124, 8720000), (125, 8650240), (128, 8447500), (155, 6976000), (160, 6758000), (200, 5406400), (218, 4960000), (248, 4360000), (250, 4325120), (256, 4223750), (310, 3488000), (320, 3379000), (400, 2703200), (436, 2480000), (496, 2180000), (500, 2162560), (512, 2111875), (545, 1984000), (620, 1744000), (625, 1730048), (640, 1689500), (775, 1395200), (800, 1351600), (872, 1240000), (992, 1090000), (1000, 1081280), (1090, 992000), (1240, 872000), (1250, 865024), (1280, 844750), (1550, 697600), (1600, 675800), (1744, 620000), (1984, 545000), (2000, 540640), (2180, 496000), (2480, 436000), (2500, 432512), (2560, 422375), (2725, 396800), (3100, 348800), (3200, 337900), (3379, 320000), (3488, 310000), (3875, 279040), (3968, 272500), (4000, 270320), (4360, 248000), (4960, 218000), (5000, 216256), (5450, 198400), (6200, 174400), (6400, 168950), (6758, 160000), (6976, 155000), (7750, 139520), (7936, 136250), (8000, 135160), (8720, 124000), (9920, 109000), (10000, 108128), (10900, 99200), (12400, 87200), (12800, 84475), (13516, 80000), (13625, 79360), (13952, 77500), (15500, 69760), (15872, 68125), (16000, 67580), (16895, 64000), (17440, 62000), (19375, 55808), (19840, 54500), (20000, 54064), (21800, 49600), (24800, 43600), (27032, 40000), (27250, 39680), (27904, 38750), (31000, 34880), (32000, 33790)]