81239040

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:115

約数の個数: 264

約数和(自身を含む): 295062768

約数和(自身を除く): 213823728

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 41, 43, 45, 48, 60, 64, 72, 80, 82, 86, 90, 96, 120, 123, 128, 129, 144, 160, 164, 172, 180, 192, 205, 215, 240, 246, 256, 258, 288, 320, 328, 344, 360, 369, 384, 387, 410, 430, 480, 492, 512, 516, 576, 615, 640, 645, 656, 688, 720, 738, 768, 774, 820, 860, 960, 984, 1024, 1032, 1152, 1230, 1280, 1290, 1312, 1376, 1440, 1476, 1536, 1548, 1640, 1720, 1763, 1845, 1920, 1935, 1968, 2064, 2304, 2460, 2560, 2580, 2624, 2752, 2880, 2952, 3072, 3096, 3280, 3440, 3526, 3690, 3840, 3870, 3936, 4128, 4608, 4920, 5120, 5160, 5248, 5289, 5504, 5760, 5904, 6192, 6560, 6880, 7052, 7380, 7680, 7740, 7872, 8256, 8815, 9216, 9840, 10320, 10496, 10578, 11008, 11520, 11808, 12384, 13120, 13760, 14104, 14760, 15360, 15480, 15744, 15867, 16512, 17630, 19680, 20640, 20992, 21156, 22016, 23040, 23616, 24768, 26240, 26445, 27520, 28208, 29520, 30960, 31488, 31734, 33024, 35260, 39360, 41280, 41984, 42312, 44032, 46080, 47232, 49536, 52480, 52890, 55040, 56416, 59040, 61920, 62976, 63468, 66048, 70520, 78720, 79335, 82560, 84624, 94464, 99072, 104960, 105780, 110080, 112832, 118080, 123840, 125952, 126936, 132096, 141040, 157440, 158670, 165120, 169248, 188928, 198144, 209920, 211560, 220160, 225664, 236160, 247680, 253872, 282080, 314880, 317340, 330240, 338496, 377856, 396288, 423120, 451328, 472320, 495360, 507744, 564160, 629760, 634680, 660480, 676992, 846240, 902656, 944640, 990720, 1015488, 1128320, 1269360, 1353984, 1692480, 1805312, 1889280, 1981440, 2030976, 2256640, 2538720, 2707968, 3384960, 4061952, 4513280, 5077440, 5415936, 6769920, 8123904, 9026560, 10154880, 13539840, 16247808, 20309760, 27079680, 40619520, 81239040]

約数ペア:

[(1, 81239040), (2, 40619520), (3, 27079680), (4, 20309760), (5, 16247808), (6, 13539840), (8, 10154880), (9, 9026560), (10, 8123904), (12, 6769920), (15, 5415936), (16, 5077440), (18, 4513280), (20, 4061952), (24, 3384960), (30, 2707968), (32, 2538720), (36, 2256640), (40, 2030976), (41, 1981440), (43, 1889280), (45, 1805312), (48, 1692480), (60, 1353984), (64, 1269360), (72, 1128320), (80, 1015488), (82, 990720), (86, 944640), (90, 902656), (96, 846240), (120, 676992), (123, 660480), (128, 634680), (129, 629760), (144, 564160), (160, 507744), (164, 495360), (172, 472320), (180, 451328), (192, 423120), (205, 396288), (215, 377856), (240, 338496), (246, 330240), (256, 317340), (258, 314880), (288, 282080), (320, 253872), (328, 247680), (344, 236160), (360, 225664), (369, 220160), (384, 211560), (387, 209920), (410, 198144), (430, 188928), (480, 169248), (492, 165120), (512, 158670), (516, 157440), (576, 141040), (615, 132096), (640, 126936), (645, 125952), (656, 123840), (688, 118080), (720, 112832), (738, 110080), (768, 105780), (774, 104960), (820, 99072), (860, 94464), (960, 84624), (984, 82560), (1024, 79335), (1032, 78720), (1152, 70520), (1230, 66048), (1280, 63468), (1290, 62976), (1312, 61920), (1376, 59040), (1440, 56416), (1476, 55040), (1536, 52890), (1548, 52480), (1640, 49536), (1720, 47232), (1763, 46080), (1845, 44032), (1920, 42312), (1935, 41984), (1968, 41280), (2064, 39360), (2304, 35260), (2460, 33024), (2560, 31734), (2580, 31488), (2624, 30960), (2752, 29520), (2880, 28208), (2952, 27520), (3072, 26445), (3096, 26240), (3280, 24768), (3440, 23616), (3526, 23040), (3690, 22016), (3840, 21156), (3870, 20992), (3936, 20640), (4128, 19680), (4608, 17630), (4920, 16512), (5120, 15867), (5160, 15744), (5248, 15480), (5289, 15360), (5504, 14760), (5760, 14104), (5904, 13760), (6192, 13120), (6560, 12384), (6880, 11808), (7052, 11520), (7380, 11008), (7680, 10578), (7740, 10496), (7872, 10320), (8256, 9840), (8815, 9216)]