81676980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:187

約数の個数: 288

約数和(自身を含む): 317011968

約数和(自身を除く): 235334988

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 28, 30, 33, 35, 36, 42, 44, 45, 55, 60, 63, 66, 70, 71, 77, 83, 84, 90, 99, 105, 110, 126, 132, 140, 142, 154, 165, 166, 180, 198, 210, 213, 220, 231, 249, 252, 284, 308, 315, 330, 332, 355, 385, 396, 415, 420, 426, 462, 495, 497, 498, 581, 630, 639, 660, 693, 710, 747, 770, 781, 830, 852, 913, 924, 990, 994, 996, 1065, 1155, 1162, 1245, 1260, 1278, 1386, 1420, 1491, 1494, 1540, 1562, 1660, 1743, 1826, 1980, 1988, 2130, 2310, 2324, 2343, 2485, 2490, 2556, 2739, 2772, 2905, 2982, 2988, 3124, 3195, 3465, 3486, 3652, 3735, 3905, 4260, 4473, 4565, 4620, 4686, 4970, 4980, 5229, 5467, 5478, 5810, 5893, 5964, 6390, 6391, 6930, 6972, 7029, 7455, 7470, 7810, 8217, 8715, 8946, 9130, 9372, 9940, 10458, 10934, 10956, 11620, 11715, 11786, 12780, 12782, 13695, 13860, 14058, 14910, 14940, 15620, 16401, 16434, 17430, 17679, 17892, 18260, 19173, 20916, 21868, 22365, 23430, 23572, 25564, 26145, 27335, 27390, 28116, 29465, 29820, 31955, 32802, 32868, 34860, 35145, 35358, 38346, 41085, 41251, 44730, 46860, 49203, 52290, 53037, 54670, 54780, 57519, 58930, 63910, 64823, 65604, 70290, 70716, 76692, 82005, 82170, 82502, 88395, 89460, 95865, 98406, 104580, 106074, 109340, 115038, 117860, 123753, 127820, 129646, 140580, 164010, 164340, 165004, 176790, 191730, 194469, 196812, 206255, 212148, 230076, 246015, 247506, 259292, 265185, 287595, 324115, 328020, 353580, 371259, 383460, 388938, 412510, 453761, 492030, 495012, 530370, 575190, 583407, 618765, 648230, 742518, 777876, 825020, 907522, 972345, 984060, 1060740, 1150380, 1166814, 1237530, 1296460, 1361283, 1485036, 1815044, 1856295, 1944690, 2268805, 2333628, 2475060, 2722566, 2917035, 3712590, 3889380, 4083849, 4537610, 5445132, 5834070, 6806415, 7425180, 8167698, 9075220, 11668140, 13612830, 16335396, 20419245, 27225660, 40838490, 81676980]

約数ペア:

[(1, 81676980), (2, 40838490), (3, 27225660), (4, 20419245), (5, 16335396), (6, 13612830), (7, 11668140), (9, 9075220), (10, 8167698), (11, 7425180), (12, 6806415), (14, 5834070), (15, 5445132), (18, 4537610), (20, 4083849), (21, 3889380), (22, 3712590), (28, 2917035), (30, 2722566), (33, 2475060), (35, 2333628), (36, 2268805), (42, 1944690), (44, 1856295), (45, 1815044), (55, 1485036), (60, 1361283), (63, 1296460), (66, 1237530), (70, 1166814), (71, 1150380), (77, 1060740), (83, 984060), (84, 972345), (90, 907522), (99, 825020), (105, 777876), (110, 742518), (126, 648230), (132, 618765), (140, 583407), (142, 575190), (154, 530370), (165, 495012), (166, 492030), (180, 453761), (198, 412510), (210, 388938), (213, 383460), (220, 371259), (231, 353580), (249, 328020), (252, 324115), (284, 287595), (308, 265185), (315, 259292), (330, 247506), (332, 246015), (355, 230076), (385, 212148), (396, 206255), (415, 196812), (420, 194469), (426, 191730), (462, 176790), (495, 165004), (497, 164340), (498, 164010), (581, 140580), (630, 129646), (639, 127820), (660, 123753), (693, 117860), (710, 115038), (747, 109340), (770, 106074), (781, 104580), (830, 98406), (852, 95865), (913, 89460), (924, 88395), (990, 82502), (994, 82170), (996, 82005), (1065, 76692), (1155, 70716), (1162, 70290), (1245, 65604), (1260, 64823), (1278, 63910), (1386, 58930), (1420, 57519), (1491, 54780), (1494, 54670), (1540, 53037), (1562, 52290), (1660, 49203), (1743, 46860), (1826, 44730), (1980, 41251), (1988, 41085), (2130, 38346), (2310, 35358), (2324, 35145), (2343, 34860), (2485, 32868), (2490, 32802), (2556, 31955), (2739, 29820), (2772, 29465), (2905, 28116), (2982, 27390), (2988, 27335), (3124, 26145), (3195, 25564), (3465, 23572), (3486, 23430), (3652, 22365), (3735, 21868), (3905, 20916), (4260, 19173), (4473, 18260), (4565, 17892), (4620, 17679), (4686, 17430), (4970, 16434), (4980, 16401), (5229, 15620), (5467, 14940), (5478, 14910), (5810, 14058), (5893, 13860), (5964, 13695), (6390, 12782), (6391, 12780), (6930, 11786), (6972, 11715), (7029, 11620), (7455, 10956), (7470, 10934), (7810, 10458), (8217, 9940), (8715, 9372), (8946, 9130)]