81690840

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{421}}^1$

素因数の和:463

約数の個数: 288

約数和(自身を含む): 337718160

約数和(自身を除く): 256027320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 49, 55, 56, 60, 63, 66, 70, 72, 77, 84, 88, 90, 98, 99, 105, 110, 120, 126, 132, 140, 147, 154, 165, 168, 180, 196, 198, 210, 220, 231, 245, 252, 264, 280, 294, 308, 315, 330, 360, 385, 392, 396, 420, 421, 440, 441, 462, 490, 495, 504, 539, 588, 616, 630, 660, 693, 735, 770, 792, 840, 842, 882, 924, 980, 990, 1078, 1155, 1176, 1260, 1263, 1320, 1386, 1470, 1540, 1617, 1684, 1764, 1848, 1960, 1980, 2105, 2156, 2205, 2310, 2520, 2526, 2695, 2772, 2940, 2947, 3080, 3234, 3368, 3465, 3528, 3789, 3960, 4210, 4312, 4410, 4620, 4631, 4851, 5052, 5390, 5544, 5880, 5894, 6315, 6468, 6930, 7578, 8085, 8420, 8820, 8841, 9240, 9262, 9702, 10104, 10780, 11788, 12630, 12936, 13860, 13893, 14735, 15156, 16170, 16840, 17640, 17682, 18524, 18945, 19404, 20629, 21560, 23155, 23576, 24255, 25260, 26523, 27720, 27786, 29470, 30312, 32340, 32417, 35364, 37048, 37890, 38808, 41258, 41679, 44205, 46310, 48510, 50520, 53046, 55572, 58940, 61887, 64680, 64834, 69465, 70728, 75780, 82516, 83358, 88410, 92620, 97020, 97251, 103145, 106092, 111144, 117880, 123774, 129668, 132615, 138930, 151560, 162085, 165032, 166716, 176820, 185240, 185661, 194040, 194502, 206290, 208395, 212184, 226919, 247548, 259336, 265230, 277860, 291753, 309435, 324170, 333432, 353640, 371322, 389004, 412580, 416790, 453838, 486255, 495096, 530460, 555720, 583506, 618870, 648340, 680757, 742644, 778008, 825160, 833580, 907676, 928305, 972510, 1060920, 1134595, 1167012, 1237740, 1296680, 1361514, 1458765, 1485288, 1667160, 1815352, 1856610, 1945020, 2042271, 2269190, 2334024, 2475480, 2723028, 2917530, 3403785, 3713220, 3890040, 4084542, 4538380, 5446056, 5835060, 6807570, 7426440, 8169084, 9076760, 10211355, 11670120, 13615140, 16338168, 20422710, 27230280, 40845420, 81690840]

約数ペア:

[(1, 81690840), (2, 40845420), (3, 27230280), (4, 20422710), (5, 16338168), (6, 13615140), (7, 11670120), (8, 10211355), (9, 9076760), (10, 8169084), (11, 7426440), (12, 6807570), (14, 5835060), (15, 5446056), (18, 4538380), (20, 4084542), (21, 3890040), (22, 3713220), (24, 3403785), (28, 2917530), (30, 2723028), (33, 2475480), (35, 2334024), (36, 2269190), (40, 2042271), (42, 1945020), (44, 1856610), (45, 1815352), (49, 1667160), (55, 1485288), (56, 1458765), (60, 1361514), (63, 1296680), (66, 1237740), (70, 1167012), (72, 1134595), (77, 1060920), (84, 972510), (88, 928305), (90, 907676), (98, 833580), (99, 825160), (105, 778008), (110, 742644), (120, 680757), (126, 648340), (132, 618870), (140, 583506), (147, 555720), (154, 530460), (165, 495096), (168, 486255), (180, 453838), (196, 416790), (198, 412580), (210, 389004), (220, 371322), (231, 353640), (245, 333432), (252, 324170), (264, 309435), (280, 291753), (294, 277860), (308, 265230), (315, 259336), (330, 247548), (360, 226919), (385, 212184), (392, 208395), (396, 206290), (420, 194502), (421, 194040), (440, 185661), (441, 185240), (462, 176820), (490, 166716), (495, 165032), (504, 162085), (539, 151560), (588, 138930), (616, 132615), (630, 129668), (660, 123774), (693, 117880), (735, 111144), (770, 106092), (792, 103145), (840, 97251), (842, 97020), (882, 92620), (924, 88410), (980, 83358), (990, 82516), (1078, 75780), (1155, 70728), (1176, 69465), (1260, 64834), (1263, 64680), (1320, 61887), (1386, 58940), (1470, 55572), (1540, 53046), (1617, 50520), (1684, 48510), (1764, 46310), (1848, 44205), (1960, 41679), (1980, 41258), (2105, 38808), (2156, 37890), (2205, 37048), (2310, 35364), (2520, 32417), (2526, 32340), (2695, 30312), (2772, 29470), (2940, 27786), (2947, 27720), (3080, 26523), (3234, 25260), (3368, 24255), (3465, 23576), (3528, 23155), (3789, 21560), (3960, 20629), (4210, 19404), (4312, 18945), (4410, 18524), (4620, 17682), (4631, 17640), (4851, 16840), (5052, 16170), (5390, 15156), (5544, 14735), (5880, 13893), (5894, 13860), (6315, 12936), (6468, 12630), (6930, 11788), (7578, 10780), (8085, 10104), (8420, 9702), (8820, 9262), (8841, 9240)]