81185280

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2$

素因数の和:99

約数の個数: 240

約数和(自身を含む): 292561632

約数和(自身を除く): 211376352

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 31, 32, 33, 40, 44, 48, 55, 60, 62, 64, 66, 80, 88, 93, 96, 110, 120, 124, 128, 132, 155, 160, 165, 176, 186, 192, 220, 240, 248, 256, 264, 310, 320, 330, 341, 352, 372, 384, 440, 465, 480, 496, 512, 528, 620, 640, 660, 682, 704, 744, 768, 880, 930, 960, 961, 992, 1023, 1056, 1240, 1280, 1320, 1364, 1408, 1488, 1536, 1705, 1760, 1860, 1920, 1922, 1984, 2046, 2112, 2480, 2560, 2640, 2728, 2816, 2883, 2976, 3410, 3520, 3720, 3840, 3844, 3968, 4092, 4224, 4805, 4960, 5115, 5280, 5456, 5632, 5766, 5952, 6820, 7040, 7440, 7680, 7688, 7936, 8184, 8448, 9610, 9920, 10230, 10560, 10571, 10912, 11532, 11904, 13640, 14080, 14415, 14880, 15376, 15872, 16368, 16896, 19220, 19840, 20460, 21120, 21142, 21824, 23064, 23808, 27280, 28160, 28830, 29760, 30752, 31713, 32736, 38440, 39680, 40920, 42240, 42284, 43648, 46128, 47616, 52855, 54560, 57660, 59520, 61504, 63426, 65472, 76880, 79360, 81840, 84480, 84568, 87296, 92256, 105710, 109120, 115320, 119040, 123008, 126852, 130944, 153760, 158565, 163680, 169136, 174592, 184512, 211420, 218240, 230640, 238080, 246016, 253704, 261888, 307520, 317130, 327360, 338272, 369024, 422840, 436480, 461280, 492032, 507408, 523776, 615040, 634260, 654720, 676544, 738048, 845680, 872960, 922560, 1014816, 1230080, 1268520, 1309440, 1353088, 1476096, 1691360, 1845120, 2029632, 2460160, 2537040, 2618880, 2706176, 3382720, 3690240, 4059264, 5074080, 5412352, 6765440, 7380480, 8118528, 10148160, 13530880, 16237056, 20296320, 27061760, 40592640, 81185280]

約数ペア:

[(1, 81185280), (2, 40592640), (3, 27061760), (4, 20296320), (5, 16237056), (6, 13530880), (8, 10148160), (10, 8118528), (11, 7380480), (12, 6765440), (15, 5412352), (16, 5074080), (20, 4059264), (22, 3690240), (24, 3382720), (30, 2706176), (31, 2618880), (32, 2537040), (33, 2460160), (40, 2029632), (44, 1845120), (48, 1691360), (55, 1476096), (60, 1353088), (62, 1309440), (64, 1268520), (66, 1230080), (80, 1014816), (88, 922560), (93, 872960), (96, 845680), (110, 738048), (120, 676544), (124, 654720), (128, 634260), (132, 615040), (155, 523776), (160, 507408), (165, 492032), (176, 461280), (186, 436480), (192, 422840), (220, 369024), (240, 338272), (248, 327360), (256, 317130), (264, 307520), (310, 261888), (320, 253704), (330, 246016), (341, 238080), (352, 230640), (372, 218240), (384, 211420), (440, 184512), (465, 174592), (480, 169136), (496, 163680), (512, 158565), (528, 153760), (620, 130944), (640, 126852), (660, 123008), (682, 119040), (704, 115320), (744, 109120), (768, 105710), (880, 92256), (930, 87296), (960, 84568), (961, 84480), (992, 81840), (1023, 79360), (1056, 76880), (1240, 65472), (1280, 63426), (1320, 61504), (1364, 59520), (1408, 57660), (1488, 54560), (1536, 52855), (1705, 47616), (1760, 46128), (1860, 43648), (1920, 42284), (1922, 42240), (1984, 40920), (2046, 39680), (2112, 38440), (2480, 32736), (2560, 31713), (2640, 30752), (2728, 29760), (2816, 28830), (2883, 28160), (2976, 27280), (3410, 23808), (3520, 23064), (3720, 21824), (3840, 21142), (3844, 21120), (3968, 20460), (4092, 19840), (4224, 19220), (4805, 16896), (4960, 16368), (5115, 15872), (5280, 15376), (5456, 14880), (5632, 14415), (5766, 14080), (5952, 13640), (6820, 11904), (7040, 11532), (7440, 10912), (7680, 10571), (7688, 10560), (7936, 10230), (8184, 9920), (8448, 9610)]