81781920

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1721}}^1$

素因数の和:1756

約数の個数: 192

約数和(自身を含む): 312439680

約数和(自身を除く): 230657760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 32, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 88, 90, 96, 99, 108, 110, 120, 132, 135, 144, 160, 165, 176, 180, 198, 216, 220, 240, 264, 270, 288, 297, 330, 352, 360, 396, 432, 440, 480, 495, 528, 540, 594, 660, 720, 792, 864, 880, 990, 1056, 1080, 1188, 1320, 1440, 1485, 1584, 1721, 1760, 1980, 2160, 2376, 2640, 2970, 3168, 3442, 3960, 4320, 4752, 5163, 5280, 5940, 6884, 7920, 8605, 9504, 10326, 11880, 13768, 15489, 15840, 17210, 18931, 20652, 23760, 25815, 27536, 30978, 34420, 37862, 41304, 46467, 47520, 51630, 55072, 56793, 61956, 68840, 75724, 77445, 82608, 92934, 94655, 103260, 113586, 123912, 137680, 151448, 154890, 165216, 170379, 185868, 189310, 206520, 227172, 232335, 247824, 275360, 283965, 302896, 309780, 340758, 371736, 378620, 413040, 454344, 464670, 495648, 511137, 567930, 605792, 619560, 681516, 743472, 757240, 826080, 851895, 908688, 929340, 1022274, 1135860, 1239120, 1363032, 1486944, 1514480, 1703790, 1817376, 1858680, 2044548, 2271720, 2478240, 2555685, 2726064, 3028960, 3407580, 3717360, 4089096, 4543440, 5111370, 5452128, 6815160, 7434720, 8178192, 9086880, 10222740, 13630320, 16356384, 20445480, 27260640, 40890960, 81781920]

約数ペア:

[(1, 81781920), (2, 40890960), (3, 27260640), (4, 20445480), (5, 16356384), (6, 13630320), (8, 10222740), (9, 9086880), (10, 8178192), (11, 7434720), (12, 6815160), (15, 5452128), (16, 5111370), (18, 4543440), (20, 4089096), (22, 3717360), (24, 3407580), (27, 3028960), (30, 2726064), (32, 2555685), (33, 2478240), (36, 2271720), (40, 2044548), (44, 1858680), (45, 1817376), (48, 1703790), (54, 1514480), (55, 1486944), (60, 1363032), (66, 1239120), (72, 1135860), (80, 1022274), (88, 929340), (90, 908688), (96, 851895), (99, 826080), (108, 757240), (110, 743472), (120, 681516), (132, 619560), (135, 605792), (144, 567930), (160, 511137), (165, 495648), (176, 464670), (180, 454344), (198, 413040), (216, 378620), (220, 371736), (240, 340758), (264, 309780), (270, 302896), (288, 283965), (297, 275360), (330, 247824), (352, 232335), (360, 227172), (396, 206520), (432, 189310), (440, 185868), (480, 170379), (495, 165216), (528, 154890), (540, 151448), (594, 137680), (660, 123912), (720, 113586), (792, 103260), (864, 94655), (880, 92934), (990, 82608), (1056, 77445), (1080, 75724), (1188, 68840), (1320, 61956), (1440, 56793), (1485, 55072), (1584, 51630), (1721, 47520), (1760, 46467), (1980, 41304), (2160, 37862), (2376, 34420), (2640, 30978), (2970, 27536), (3168, 25815), (3442, 23760), (3960, 20652), (4320, 18931), (4752, 17210), (5163, 15840), (5280, 15489), (5940, 13768), (6884, 11880), (7920, 10326), (8605, 9504)]