1213771520

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:259

約数の個数: 216

約数和(自身を含む): 3267718272

約数和(自身を除く): 2053946752

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 169, 181, 208, 248, 256, 260, 310, 320, 338, 362, 403, 416, 496, 520, 620, 640, 676, 724, 806, 832, 845, 905, 992, 1040, 1240, 1280, 1352, 1448, 1612, 1664, 1690, 1810, 1984, 2015, 2080, 2353, 2480, 2704, 2896, 3224, 3328, 3380, 3620, 3968, 4030, 4160, 4706, 4960, 5239, 5408, 5611, 5792, 6448, 6760, 7240, 7936, 8060, 8320, 9412, 9920, 10478, 10816, 11222, 11584, 11765, 12896, 13520, 14480, 16120, 16640, 18824, 19840, 20956, 21632, 22444, 23168, 23530, 25792, 26195, 27040, 28055, 28960, 30589, 32240, 37648, 39680, 41912, 43264, 44888, 46336, 47060, 51584, 52390, 54080, 56110, 57920, 61178, 64480, 72943, 75296, 83824, 89776, 94120, 103168, 104780, 108160, 112220, 115840, 122356, 128960, 145886, 150592, 152945, 167648, 179552, 188240, 209560, 216320, 224440, 231680, 244712, 257920, 291772, 301184, 305890, 335296, 359104, 364715, 376480, 419120, 448880, 489424, 515840, 583544, 602368, 611780, 670592, 718208, 729430, 752960, 838240, 897760, 948259, 978848, 1167088, 1223560, 1341184, 1436416, 1458860, 1505920, 1676480, 1795520, 1896518, 1957696, 2334176, 2447120, 2917720, 3011840, 3352960, 3591040, 3793036, 3915392, 4668352, 4741295, 4894240, 5835440, 6705920, 7182080, 7586072, 7830784, 9336704, 9482590, 9788480, 11670880, 15172144, 18673408, 18965180, 19576960, 23341760, 30344288, 37930360, 39153920, 46683520, 60688576, 75860720, 93367040, 121377152, 151721440, 242754304, 303442880, 606885760, 1213771520]

約数ペア:

[(1, 1213771520), (2, 606885760), (4, 303442880), (5, 242754304), (8, 151721440), (10, 121377152), (13, 93367040), (16, 75860720), (20, 60688576), (26, 46683520), (31, 39153920), (32, 37930360), (40, 30344288), (52, 23341760), (62, 19576960), (64, 18965180), (65, 18673408), (80, 15172144), (104, 11670880), (124, 9788480), (128, 9482590), (130, 9336704), (155, 7830784), (160, 7586072), (169, 7182080), (181, 6705920), (208, 5835440), (248, 4894240), (256, 4741295), (260, 4668352), (310, 3915392), (320, 3793036), (338, 3591040), (362, 3352960), (403, 3011840), (416, 2917720), (496, 2447120), (520, 2334176), (620, 1957696), (640, 1896518), (676, 1795520), (724, 1676480), (806, 1505920), (832, 1458860), (845, 1436416), (905, 1341184), (992, 1223560), (1040, 1167088), (1240, 978848), (1280, 948259), (1352, 897760), (1448, 838240), (1612, 752960), (1664, 729430), (1690, 718208), (1810, 670592), (1984, 611780), (2015, 602368), (2080, 583544), (2353, 515840), (2480, 489424), (2704, 448880), (2896, 419120), (3224, 376480), (3328, 364715), (3380, 359104), (3620, 335296), (3968, 305890), (4030, 301184), (4160, 291772), (4706, 257920), (4960, 244712), (5239, 231680), (5408, 224440), (5611, 216320), (5792, 209560), (6448, 188240), (6760, 179552), (7240, 167648), (7936, 152945), (8060, 150592), (8320, 145886), (9412, 128960), (9920, 122356), (10478, 115840), (10816, 112220), (11222, 108160), (11584, 104780), (11765, 103168), (12896, 94120), (13520, 89776), (14480, 83824), (16120, 75296), (16640, 72943), (18824, 64480), (19840, 61178), (20956, 57920), (21632, 56110), (22444, 54080), (23168, 52390), (23530, 51584), (25792, 47060), (26195, 46336), (27040, 44888), (28055, 43264), (28960, 41912), (30589, 39680), (32240, 37648)]