81681840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2767}}^1$

素因数の和:2827

約数の個数: 120

約数和(自身を含む): 281107008

約数和(自身を除く): 199425168

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 41, 45, 48, 60, 72, 80, 82, 90, 120, 123, 144, 164, 180, 205, 240, 246, 328, 360, 369, 410, 492, 615, 656, 720, 738, 820, 984, 1230, 1476, 1640, 1845, 1968, 2460, 2767, 2952, 3280, 3690, 4920, 5534, 5904, 7380, 8301, 9840, 11068, 13835, 14760, 16602, 22136, 24903, 27670, 29520, 33204, 41505, 44272, 49806, 55340, 66408, 83010, 99612, 110680, 113447, 124515, 132816, 166020, 199224, 221360, 226894, 249030, 332040, 340341, 398448, 453788, 498060, 567235, 664080, 680682, 907576, 996120, 1021023, 1134470, 1361364, 1701705, 1815152, 1992240, 2042046, 2268940, 2722728, 3403410, 4084092, 4537880, 5105115, 5445456, 6806820, 8168184, 9075760, 10210230, 13613640, 16336368, 20420460, 27227280, 40840920, 81681840]

約数ペア:

[(1, 81681840), (2, 40840920), (3, 27227280), (4, 20420460), (5, 16336368), (6, 13613640), (8, 10210230), (9, 9075760), (10, 8168184), (12, 6806820), (15, 5445456), (16, 5105115), (18, 4537880), (20, 4084092), (24, 3403410), (30, 2722728), (36, 2268940), (40, 2042046), (41, 1992240), (45, 1815152), (48, 1701705), (60, 1361364), (72, 1134470), (80, 1021023), (82, 996120), (90, 907576), (120, 680682), (123, 664080), (144, 567235), (164, 498060), (180, 453788), (205, 398448), (240, 340341), (246, 332040), (328, 249030), (360, 226894), (369, 221360), (410, 199224), (492, 166020), (615, 132816), (656, 124515), (720, 113447), (738, 110680), (820, 99612), (984, 83010), (1230, 66408), (1476, 55340), (1640, 49806), (1845, 44272), (1968, 41505), (2460, 33204), (2767, 29520), (2952, 27670), (3280, 24903), (3690, 22136), (4920, 16602), (5534, 14760), (5904, 13835), (7380, 11068), (8301, 9840)]