649287808

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{307}}^1$

素因数の和:406

約数の個数: 128

約数和(自身を含む): 1477808640

約数和(自身を除く): 828520832

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 41, 52, 62, 64, 82, 104, 124, 128, 164, 208, 248, 307, 328, 403, 416, 496, 533, 614, 656, 806, 832, 992, 1066, 1228, 1271, 1312, 1612, 1664, 1984, 2132, 2456, 2542, 2624, 3224, 3968, 3991, 4264, 4912, 5084, 5248, 6448, 7982, 8528, 9517, 9824, 10168, 12587, 12896, 15964, 16523, 17056, 19034, 19648, 20336, 25174, 25792, 31928, 33046, 34112, 38068, 39296, 40672, 50348, 51584, 63856, 66092, 68224, 76136, 81344, 100696, 123721, 127712, 132184, 152272, 162688, 163631, 201392, 247442, 255424, 264368, 304544, 327262, 390197, 402784, 494884, 510848, 528736, 609088, 654524, 780394, 805568, 989768, 1057472, 1218176, 1309048, 1560788, 1611136, 1979536, 2114944, 2618096, 3121576, 3959072, 5072561, 5236192, 6243152, 7918144, 10145122, 10472384, 12486304, 15836288, 20290244, 20944768, 24972608, 40580488, 49945216, 81160976, 162321952, 324643904, 649287808]

約数ペア:

[(1, 649287808), (2, 324643904), (4, 162321952), (8, 81160976), (13, 49945216), (16, 40580488), (26, 24972608), (31, 20944768), (32, 20290244), (41, 15836288), (52, 12486304), (62, 10472384), (64, 10145122), (82, 7918144), (104, 6243152), (124, 5236192), (128, 5072561), (164, 3959072), (208, 3121576), (248, 2618096), (307, 2114944), (328, 1979536), (403, 1611136), (416, 1560788), (496, 1309048), (533, 1218176), (614, 1057472), (656, 989768), (806, 805568), (832, 780394), (992, 654524), (1066, 609088), (1228, 528736), (1271, 510848), (1312, 494884), (1612, 402784), (1664, 390197), (1984, 327262), (2132, 304544), (2456, 264368), (2542, 255424), (2624, 247442), (3224, 201392), (3968, 163631), (3991, 162688), (4264, 152272), (4912, 132184), (5084, 127712), (5248, 123721), (6448, 100696), (7982, 81344), (8528, 76136), (9517, 68224), (9824, 66092), (10168, 63856), (12587, 51584), (12896, 50348), (15964, 40672), (16523, 39296), (17056, 38068), (19034, 34112), (19648, 33046), (20336, 31928), (25174, 25792)]