991031808

素因数分解:

$2^9\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1601}}^1$

素因数の和:1666

約数の個数: 160

約数和(自身を含む): 2936812032

約数和(自身を除く): 1945780224

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 31, 32, 39, 48, 52, 62, 64, 78, 93, 96, 104, 124, 128, 156, 186, 192, 208, 248, 256, 312, 372, 384, 403, 416, 496, 512, 624, 744, 768, 806, 832, 992, 1209, 1248, 1488, 1536, 1601, 1612, 1664, 1984, 2418, 2496, 2976, 3202, 3224, 3328, 3968, 4803, 4836, 4992, 5952, 6404, 6448, 6656, 7936, 9606, 9672, 9984, 11904, 12808, 12896, 15872, 19212, 19344, 19968, 20813, 23808, 25616, 25792, 38424, 38688, 41626, 47616, 49631, 51232, 51584, 62439, 76848, 77376, 83252, 99262, 102464, 103168, 124878, 148893, 153696, 154752, 166504, 198524, 204928, 206336, 249756, 297786, 307392, 309504, 333008, 397048, 409856, 499512, 595572, 614784, 619008, 645203, 666016, 794096, 819712, 999024, 1191144, 1229568, 1290406, 1332032, 1588192, 1935609, 1998048, 2382288, 2459136, 2580812, 2664064, 3176384, 3871218, 3996096, 4764576, 5161624, 5328128, 6352768, 7742436, 7992192, 9529152, 10323248, 10656256, 12705536, 15484872, 15984384, 19058304, 20646496, 25411072, 30969744, 31968768, 38116608, 41292992, 61939488, 76233216, 82585984, 123878976, 165171968, 247757952, 330343936, 495515904, 991031808]

約数ペア:

[(1, 991031808), (2, 495515904), (3, 330343936), (4, 247757952), (6, 165171968), (8, 123878976), (12, 82585984), (13, 76233216), (16, 61939488), (24, 41292992), (26, 38116608), (31, 31968768), (32, 30969744), (39, 25411072), (48, 20646496), (52, 19058304), (62, 15984384), (64, 15484872), (78, 12705536), (93, 10656256), (96, 10323248), (104, 9529152), (124, 7992192), (128, 7742436), (156, 6352768), (186, 5328128), (192, 5161624), (208, 4764576), (248, 3996096), (256, 3871218), (312, 3176384), (372, 2664064), (384, 2580812), (403, 2459136), (416, 2382288), (496, 1998048), (512, 1935609), (624, 1588192), (744, 1332032), (768, 1290406), (806, 1229568), (832, 1191144), (992, 999024), (1209, 819712), (1248, 794096), (1488, 666016), (1536, 645203), (1601, 619008), (1612, 614784), (1664, 595572), (1984, 499512), (2418, 409856), (2496, 397048), (2976, 333008), (3202, 309504), (3224, 307392), (3328, 297786), (3968, 249756), (4803, 206336), (4836, 204928), (4992, 198524), (5952, 166504), (6404, 154752), (6448, 153696), (6656, 148893), (7936, 124878), (9606, 103168), (9672, 102464), (9984, 99262), (11904, 83252), (12808, 77376), (12896, 76848), (15872, 62439), (19212, 51584), (19344, 51232), (19968, 49631), (20813, 47616), (23808, 41626), (25616, 38688), (25792, 38424)]