81817560

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:199

約数の個数: 256

約数和(自身を含む): 304819200

約数和(自身を除く): 223001640

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 54, 55, 60, 66, 71, 72, 88, 90, 97, 99, 108, 110, 120, 132, 135, 142, 165, 180, 194, 198, 213, 216, 220, 264, 270, 284, 291, 297, 330, 355, 360, 388, 396, 426, 440, 485, 495, 540, 568, 582, 594, 639, 660, 710, 776, 781, 792, 852, 873, 970, 990, 1065, 1067, 1080, 1164, 1188, 1278, 1320, 1420, 1455, 1485, 1562, 1704, 1746, 1917, 1940, 1980, 2130, 2134, 2328, 2343, 2376, 2556, 2619, 2840, 2910, 2970, 3124, 3195, 3201, 3492, 3834, 3880, 3905, 3960, 4260, 4268, 4365, 4686, 5112, 5238, 5335, 5820, 5940, 6248, 6390, 6402, 6887, 6984, 7029, 7668, 7810, 8520, 8536, 8730, 9372, 9585, 9603, 10476, 10670, 11640, 11715, 11880, 12780, 12804, 13095, 13774, 14058, 15336, 15620, 16005, 17460, 18744, 19170, 19206, 20661, 20952, 21087, 21340, 23430, 25560, 25608, 26190, 27548, 28116, 28809, 31240, 32010, 34435, 34920, 35145, 38340, 38412, 41322, 42174, 42680, 46860, 48015, 52380, 55096, 56232, 57618, 61983, 64020, 68870, 70290, 75757, 76680, 76824, 82644, 84348, 93720, 96030, 103305, 104760, 105435, 115236, 123966, 128040, 137740, 140580, 144045, 151514, 165288, 168696, 185949, 192060, 206610, 210870, 227271, 230472, 247932, 275480, 281160, 288090, 303028, 309915, 371898, 378785, 384120, 413220, 421740, 454542, 495864, 576180, 606056, 619830, 681813, 743796, 757570, 826440, 843480, 909084, 929745, 1136355, 1152360, 1239660, 1363626, 1487592, 1515140, 1818168, 1859490, 2045439, 2272710, 2479320, 2727252, 3030280, 3409065, 3718980, 4090878, 4545420, 5454504, 6818130, 7437960, 8181756, 9090840, 10227195, 13636260, 16363512, 20454390, 27272520, 40908780, 81817560]

約数ペア:

[(1, 81817560), (2, 40908780), (3, 27272520), (4, 20454390), (5, 16363512), (6, 13636260), (8, 10227195), (9, 9090840), (10, 8181756), (11, 7437960), (12, 6818130), (15, 5454504), (18, 4545420), (20, 4090878), (22, 3718980), (24, 3409065), (27, 3030280), (30, 2727252), (33, 2479320), (36, 2272710), (40, 2045439), (44, 1859490), (45, 1818168), (54, 1515140), (55, 1487592), (60, 1363626), (66, 1239660), (71, 1152360), (72, 1136355), (88, 929745), (90, 909084), (97, 843480), (99, 826440), (108, 757570), (110, 743796), (120, 681813), (132, 619830), (135, 606056), (142, 576180), (165, 495864), (180, 454542), (194, 421740), (198, 413220), (213, 384120), (216, 378785), (220, 371898), (264, 309915), (270, 303028), (284, 288090), (291, 281160), (297, 275480), (330, 247932), (355, 230472), (360, 227271), (388, 210870), (396, 206610), (426, 192060), (440, 185949), (485, 168696), (495, 165288), (540, 151514), (568, 144045), (582, 140580), (594, 137740), (639, 128040), (660, 123966), (710, 115236), (776, 105435), (781, 104760), (792, 103305), (852, 96030), (873, 93720), (970, 84348), (990, 82644), (1065, 76824), (1067, 76680), (1080, 75757), (1164, 70290), (1188, 68870), (1278, 64020), (1320, 61983), (1420, 57618), (1455, 56232), (1485, 55096), (1562, 52380), (1704, 48015), (1746, 46860), (1917, 42680), (1940, 42174), (1980, 41322), (2130, 38412), (2134, 38340), (2328, 35145), (2343, 34920), (2376, 34435), (2556, 32010), (2619, 31240), (2840, 28809), (2910, 28116), (2970, 27548), (3124, 26190), (3195, 25608), (3201, 25560), (3492, 23430), (3834, 21340), (3880, 21087), (3905, 20952), (3960, 20661), (4260, 19206), (4268, 19170), (4365, 18744), (4686, 17460), (5112, 16005), (5238, 15620), (5335, 15336), (5820, 14058), (5940, 13774), (6248, 13095), (6390, 12804), (6402, 12780), (6887, 11880), (6984, 11715), (7029, 11640), (7668, 10670), (7810, 10476), (8520, 9603), (8536, 9585), (8730, 9372)]