81663120

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1$

素因数の和:531

約数の個数: 320

約数和(自身を含む): 351406080

約数和(自身を除く): 269742960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 24, 27, 28, 30, 33, 35, 36, 40, 42, 44, 45, 48, 54, 55, 56, 60, 63, 66, 70, 72, 77, 80, 84, 88, 90, 99, 105, 108, 110, 112, 120, 126, 132, 135, 140, 144, 154, 165, 168, 176, 180, 189, 198, 210, 216, 220, 231, 240, 252, 264, 270, 280, 297, 308, 315, 330, 336, 360, 378, 385, 396, 420, 432, 440, 462, 491, 495, 504, 528, 540, 560, 594, 616, 630, 660, 693, 720, 756, 770, 792, 840, 880, 924, 945, 982, 990, 1008, 1080, 1155, 1188, 1232, 1260, 1320, 1386, 1473, 1485, 1512, 1540, 1584, 1680, 1848, 1890, 1964, 1980, 2079, 2160, 2310, 2376, 2455, 2520, 2640, 2772, 2946, 2970, 3024, 3080, 3437, 3465, 3696, 3780, 3928, 3960, 4158, 4419, 4620, 4752, 4910, 5040, 5401, 5544, 5892, 5940, 6160, 6874, 6930, 7365, 7560, 7856, 7920, 8316, 8838, 9240, 9820, 10311, 10395, 10802, 11088, 11784, 11880, 13257, 13748, 13860, 14730, 15120, 16203, 16632, 17185, 17676, 18480, 19640, 20622, 20790, 21604, 22095, 23568, 23760, 26514, 27005, 27496, 27720, 29460, 30933, 32406, 33264, 34370, 35352, 37807, 39280, 41244, 41580, 43208, 44190, 48609, 51555, 53028, 54010, 54992, 55440, 58920, 61866, 64812, 66285, 68740, 70704, 75614, 81015, 82488, 83160, 86416, 88380, 92799, 97218, 103110, 106056, 108020, 113421, 117840, 123732, 129624, 132570, 137480, 145827, 151228, 154665, 162030, 164976, 166320, 176760, 185598, 189035, 194436, 206220, 212112, 216040, 226842, 243045, 247464, 259248, 265140, 274960, 291654, 302456, 309330, 324060, 340263, 353520, 371196, 378070, 388872, 412440, 432080, 453684, 463995, 486090, 494928, 530280, 567105, 583308, 604912, 618660, 648120, 680526, 729135, 742392, 756140, 777744, 824880, 907368, 927990, 972180, 1020789, 1060560, 1134210, 1166616, 1237320, 1296240, 1361052, 1458270, 1484784, 1512280, 1701315, 1814736, 1855980, 1944360, 2041578, 2268420, 2333232, 2474640, 2722104, 2916540, 3024560, 3402630, 3711960, 3888720, 4083156, 4536840, 5103945, 5444208, 5833080, 6805260, 7423920, 8166312, 9073680, 10207890, 11666160, 13610520, 16332624, 20415780, 27221040, 40831560, 81663120]

約数ペア:

[(1, 81663120), (2, 40831560), (3, 27221040), (4, 20415780), (5, 16332624), (6, 13610520), (7, 11666160), (8, 10207890), (9, 9073680), (10, 8166312), (11, 7423920), (12, 6805260), (14, 5833080), (15, 5444208), (16, 5103945), (18, 4536840), (20, 4083156), (21, 3888720), (22, 3711960), (24, 3402630), (27, 3024560), (28, 2916540), (30, 2722104), (33, 2474640), (35, 2333232), (36, 2268420), (40, 2041578), (42, 1944360), (44, 1855980), (45, 1814736), (48, 1701315), (54, 1512280), (55, 1484784), (56, 1458270), (60, 1361052), (63, 1296240), (66, 1237320), (70, 1166616), (72, 1134210), (77, 1060560), (80, 1020789), (84, 972180), (88, 927990), (90, 907368), (99, 824880), (105, 777744), (108, 756140), (110, 742392), (112, 729135), (120, 680526), (126, 648120), (132, 618660), (135, 604912), (140, 583308), (144, 567105), (154, 530280), (165, 494928), (168, 486090), (176, 463995), (180, 453684), (189, 432080), (198, 412440), (210, 388872), (216, 378070), (220, 371196), (231, 353520), (240, 340263), (252, 324060), (264, 309330), (270, 302456), (280, 291654), (297, 274960), (308, 265140), (315, 259248), (330, 247464), (336, 243045), (360, 226842), (378, 216040), (385, 212112), (396, 206220), (420, 194436), (432, 189035), (440, 185598), (462, 176760), (491, 166320), (495, 164976), (504, 162030), (528, 154665), (540, 151228), (560, 145827), (594, 137480), (616, 132570), (630, 129624), (660, 123732), (693, 117840), (720, 113421), (756, 108020), (770, 106056), (792, 103110), (840, 97218), (880, 92799), (924, 88380), (945, 86416), (982, 83160), (990, 82488), (1008, 81015), (1080, 75614), (1155, 70704), (1188, 68740), (1232, 66285), (1260, 64812), (1320, 61866), (1386, 58920), (1473, 55440), (1485, 54992), (1512, 54010), (1540, 53028), (1584, 51555), (1680, 48609), (1848, 44190), (1890, 43208), (1964, 41580), (1980, 41244), (2079, 39280), (2160, 37807), (2310, 35352), (2376, 34370), (2455, 33264), (2520, 32406), (2640, 30933), (2772, 29460), (2946, 27720), (2970, 27496), (3024, 27005), (3080, 26514), (3437, 23760), (3465, 23568), (3696, 22095), (3780, 21604), (3928, 20790), (3960, 20622), (4158, 19640), (4419, 18480), (4620, 17676), (4752, 17185), (4910, 16632), (5040, 16203), (5401, 15120), (5544, 14730), (5892, 13860), (5940, 13748), (6160, 13257), (6874, 11880), (6930, 11784), (7365, 11088), (7560, 10802), (7856, 10395), (7920, 10311), (8316, 9820), (8838, 9240)]