81589860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{463}}^1$

素因数の和:578

約数の個数: 144

約数和(自身を含む): 273611520

約数和(自身を除く): 192021660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 89, 90, 99, 110, 132, 165, 178, 180, 198, 220, 267, 330, 356, 396, 445, 463, 495, 534, 660, 801, 890, 926, 979, 990, 1068, 1335, 1389, 1602, 1780, 1852, 1958, 1980, 2315, 2670, 2778, 2937, 3204, 3916, 4005, 4167, 4630, 4895, 5093, 5340, 5556, 5874, 6945, 8010, 8334, 8811, 9260, 9790, 10186, 11748, 13890, 14685, 15279, 16020, 16668, 17622, 19580, 20372, 20835, 25465, 27780, 29370, 30558, 35244, 41207, 41670, 44055, 45837, 50930, 58740, 61116, 76395, 82414, 83340, 88110, 91674, 101860, 123621, 152790, 164828, 176220, 183348, 206035, 229185, 247242, 305580, 370863, 412070, 453277, 458370, 494484, 618105, 741726, 824140, 906554, 916740, 1236210, 1359831, 1483452, 1813108, 1854315, 2266385, 2472420, 2719662, 3708630, 4079493, 4532770, 5439324, 6799155, 7417260, 8158986, 9065540, 13598310, 16317972, 20397465, 27196620, 40794930, 81589860]

約数ペア:

[(1, 81589860), (2, 40794930), (3, 27196620), (4, 20397465), (5, 16317972), (6, 13598310), (9, 9065540), (10, 8158986), (11, 7417260), (12, 6799155), (15, 5439324), (18, 4532770), (20, 4079493), (22, 3708630), (30, 2719662), (33, 2472420), (36, 2266385), (44, 1854315), (45, 1813108), (55, 1483452), (60, 1359831), (66, 1236210), (89, 916740), (90, 906554), (99, 824140), (110, 741726), (132, 618105), (165, 494484), (178, 458370), (180, 453277), (198, 412070), (220, 370863), (267, 305580), (330, 247242), (356, 229185), (396, 206035), (445, 183348), (463, 176220), (495, 164828), (534, 152790), (660, 123621), (801, 101860), (890, 91674), (926, 88110), (979, 83340), (990, 82414), (1068, 76395), (1335, 61116), (1389, 58740), (1602, 50930), (1780, 45837), (1852, 44055), (1958, 41670), (1980, 41207), (2315, 35244), (2670, 30558), (2778, 29370), (2937, 27780), (3204, 25465), (3916, 20835), (4005, 20372), (4167, 19580), (4630, 17622), (4895, 16668), (5093, 16020), (5340, 15279), (5556, 14685), (5874, 13890), (6945, 11748), (8010, 10186), (8334, 9790), (8811, 9260)]