81282960

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{311}}^1$

素因数の和:355

約数の個数: 240

約数和(自身を含む): 308730240

約数和(自身を除く): 227447280

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, 311, 330, 360, 363, 396, 432, 440, 484, 495, 528, 540, 594, 605, 622, 660, 720, 726, 792, 880, 933, 968, 990, 1080, 1089, 1188, 1210, 1244, 1320, 1452, 1485, 1555, 1584, 1815, 1866, 1936, 1980, 2160, 2178, 2376, 2420, 2488, 2640, 2799, 2904, 2970, 3110, 3267, 3421, 3630, 3732, 3960, 4356, 4665, 4752, 4840, 4976, 5445, 5598, 5808, 5940, 6220, 6534, 6842, 7260, 7464, 7920, 8397, 8712, 9330, 9680, 10263, 10890, 11196, 11880, 12440, 13068, 13684, 13995, 14520, 14928, 16335, 16794, 17105, 17424, 18660, 20526, 21780, 22392, 23760, 24880, 26136, 27368, 27990, 29040, 30789, 32670, 33588, 34210, 37320, 37631, 41052, 41985, 43560, 44784, 51315, 52272, 54736, 55980, 61578, 65340, 67176, 68420, 74640, 75262, 82104, 83970, 87120, 92367, 102630, 111960, 112893, 123156, 130680, 134352, 136840, 150524, 153945, 164208, 167940, 184734, 188155, 205260, 223920, 225786, 246312, 261360, 273680, 301048, 307890, 335880, 338679, 369468, 376310, 410520, 451572, 461835, 492624, 564465, 602096, 615780, 671760, 677358, 738936, 752620, 821040, 903144, 923670, 1016037, 1128930, 1231560, 1354716, 1477872, 1505240, 1693395, 1806288, 1847340, 2032074, 2257860, 2463120, 2709432, 3010480, 3386790, 3694680, 4064148, 4515720, 5080185, 5418864, 6773580, 7389360, 8128296, 9031440, 10160370, 13547160, 16256592, 20320740, 27094320, 40641480, 81282960]

約数ペア:

[(1, 81282960), (2, 40641480), (3, 27094320), (4, 20320740), (5, 16256592), (6, 13547160), (8, 10160370), (9, 9031440), (10, 8128296), (11, 7389360), (12, 6773580), (15, 5418864), (16, 5080185), (18, 4515720), (20, 4064148), (22, 3694680), (24, 3386790), (27, 3010480), (30, 2709432), (33, 2463120), (36, 2257860), (40, 2032074), (44, 1847340), (45, 1806288), (48, 1693395), (54, 1505240), (55, 1477872), (60, 1354716), (66, 1231560), (72, 1128930), (80, 1016037), (88, 923670), (90, 903144), (99, 821040), (108, 752620), (110, 738936), (120, 677358), (121, 671760), (132, 615780), (135, 602096), (144, 564465), (165, 492624), (176, 461835), (180, 451572), (198, 410520), (216, 376310), (220, 369468), (240, 338679), (242, 335880), (264, 307890), (270, 301048), (297, 273680), (311, 261360), (330, 246312), (360, 225786), (363, 223920), (396, 205260), (432, 188155), (440, 184734), (484, 167940), (495, 164208), (528, 153945), (540, 150524), (594, 136840), (605, 134352), (622, 130680), (660, 123156), (720, 112893), (726, 111960), (792, 102630), (880, 92367), (933, 87120), (968, 83970), (990, 82104), (1080, 75262), (1089, 74640), (1188, 68420), (1210, 67176), (1244, 65340), (1320, 61578), (1452, 55980), (1485, 54736), (1555, 52272), (1584, 51315), (1815, 44784), (1866, 43560), (1936, 41985), (1980, 41052), (2160, 37631), (2178, 37320), (2376, 34210), (2420, 33588), (2488, 32670), (2640, 30789), (2799, 29040), (2904, 27990), (2970, 27368), (3110, 26136), (3267, 24880), (3421, 23760), (3630, 22392), (3732, 21780), (3960, 20526), (4356, 18660), (4665, 17424), (4752, 17105), (4840, 16794), (4976, 16335), (5445, 14928), (5598, 14520), (5808, 13995), (5940, 13684), (6220, 13068), (6534, 12440), (6842, 11880), (7260, 11196), (7464, 10890), (7920, 10263), (8397, 9680), (8712, 9330)]