81805680

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{313}}^1$

素因数の和:357

約数の個数: 240

約数和(自身を含む): 310709280

約数和(自身を除く): 228903600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 88, 90, 99, 108, 110, 120, 121, 132, 135, 144, 165, 176, 180, 198, 216, 220, 240, 242, 264, 270, 297, 313, 330, 360, 363, 396, 432, 440, 484, 495, 528, 540, 594, 605, 626, 660, 720, 726, 792, 880, 939, 968, 990, 1080, 1089, 1188, 1210, 1252, 1320, 1452, 1485, 1565, 1584, 1815, 1878, 1936, 1980, 2160, 2178, 2376, 2420, 2504, 2640, 2817, 2904, 2970, 3130, 3267, 3443, 3630, 3756, 3960, 4356, 4695, 4752, 4840, 5008, 5445, 5634, 5808, 5940, 6260, 6534, 6886, 7260, 7512, 7920, 8451, 8712, 9390, 9680, 10329, 10890, 11268, 11880, 12520, 13068, 13772, 14085, 14520, 15024, 16335, 16902, 17215, 17424, 18780, 20658, 21780, 22536, 23760, 25040, 26136, 27544, 28170, 29040, 30987, 32670, 33804, 34430, 37560, 37873, 41316, 42255, 43560, 45072, 51645, 52272, 55088, 56340, 61974, 65340, 67608, 68860, 75120, 75746, 82632, 84510, 87120, 92961, 103290, 112680, 113619, 123948, 130680, 135216, 137720, 151492, 154935, 165264, 169020, 185922, 189365, 206580, 225360, 227238, 247896, 261360, 275440, 302984, 309870, 338040, 340857, 371844, 378730, 413160, 454476, 464805, 495792, 568095, 605968, 619740, 676080, 681714, 743688, 757460, 826320, 908952, 929610, 1022571, 1136190, 1239480, 1363428, 1487376, 1514920, 1704285, 1817904, 1859220, 2045142, 2272380, 2478960, 2726856, 3029840, 3408570, 3718440, 4090284, 4544760, 5112855, 5453712, 6817140, 7436880, 8180568, 9089520, 10225710, 13634280, 16361136, 20451420, 27268560, 40902840, 81805680]

約数ペア:

[(1, 81805680), (2, 40902840), (3, 27268560), (4, 20451420), (5, 16361136), (6, 13634280), (8, 10225710), (9, 9089520), (10, 8180568), (11, 7436880), (12, 6817140), (15, 5453712), (16, 5112855), (18, 4544760), (20, 4090284), (22, 3718440), (24, 3408570), (27, 3029840), (30, 2726856), (33, 2478960), (36, 2272380), (40, 2045142), (44, 1859220), (45, 1817904), (48, 1704285), (54, 1514920), (55, 1487376), (60, 1363428), (66, 1239480), (72, 1136190), (80, 1022571), (88, 929610), (90, 908952), (99, 826320), (108, 757460), (110, 743688), (120, 681714), (121, 676080), (132, 619740), (135, 605968), (144, 568095), (165, 495792), (176, 464805), (180, 454476), (198, 413160), (216, 378730), (220, 371844), (240, 340857), (242, 338040), (264, 309870), (270, 302984), (297, 275440), (313, 261360), (330, 247896), (360, 227238), (363, 225360), (396, 206580), (432, 189365), (440, 185922), (484, 169020), (495, 165264), (528, 154935), (540, 151492), (594, 137720), (605, 135216), (626, 130680), (660, 123948), (720, 113619), (726, 112680), (792, 103290), (880, 92961), (939, 87120), (968, 84510), (990, 82632), (1080, 75746), (1089, 75120), (1188, 68860), (1210, 67608), (1252, 65340), (1320, 61974), (1452, 56340), (1485, 55088), (1565, 52272), (1584, 51645), (1815, 45072), (1878, 43560), (1936, 42255), (1980, 41316), (2160, 37873), (2178, 37560), (2376, 34430), (2420, 33804), (2504, 32670), (2640, 30987), (2817, 29040), (2904, 28170), (2970, 27544), (3130, 26136), (3267, 25040), (3443, 23760), (3630, 22536), (3756, 21780), (3960, 20658), (4356, 18780), (4695, 17424), (4752, 17215), (4840, 16902), (5008, 16335), (5445, 15024), (5634, 14520), (5808, 14085), (5940, 13772), (6260, 13068), (6534, 12520), (6886, 11880), (7260, 11268), (7512, 10890), (7920, 10329), (8451, 9680), (8712, 9390)]