1991761408

素因数分解:

$2^9\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:273

約数の個数: 240

約数和(自身を含む): 5172418944

約数和(自身を除く): 3180657536

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 32, 49, 52, 56, 62, 64, 91, 98, 104, 112, 124, 128, 182, 196, 197, 208, 217, 224, 248, 256, 364, 392, 394, 403, 416, 434, 448, 496, 512, 637, 728, 784, 788, 806, 832, 868, 896, 992, 1274, 1379, 1456, 1519, 1568, 1576, 1612, 1664, 1736, 1792, 1984, 2548, 2561, 2758, 2821, 2912, 3038, 3136, 3152, 3224, 3328, 3472, 3584, 3968, 5096, 5122, 5516, 5642, 5824, 6076, 6107, 6272, 6304, 6448, 6656, 6944, 7936, 9653, 10192, 10244, 11032, 11284, 11648, 12152, 12214, 12544, 12608, 12896, 13888, 15872, 17927, 19306, 19747, 20384, 20488, 22064, 22568, 23296, 24304, 24428, 25088, 25216, 25792, 27776, 35854, 38612, 39494, 40768, 40976, 42749, 44128, 45136, 46592, 48608, 48856, 50432, 51584, 55552, 71708, 77224, 78988, 79391, 81536, 81952, 85498, 88256, 90272, 97216, 97712, 100864, 103168, 111104, 125489, 143416, 154448, 157976, 158782, 163072, 163904, 170996, 176512, 180544, 194432, 195424, 206336, 250978, 286832, 299243, 308896, 315952, 317564, 326144, 327808, 341992, 353024, 361088, 388864, 390848, 501956, 555737, 573664, 598486, 617792, 631904, 635128, 655616, 683984, 706048, 722176, 777728, 781696, 1003912, 1111474, 1147328, 1196972, 1235584, 1263808, 1270256, 1311232, 1367968, 1444352, 1563392, 2007824, 2222948, 2294656, 2393944, 2471168, 2527616, 2540512, 2735936, 3126784, 3890159, 4015648, 4445896, 4589312, 4787888, 4942336, 5055232, 5081024, 5471872, 7780318, 8031296, 8891792, 9178624, 9575776, 10110464, 10162048, 10943744, 15560636, 16062592, 17783584, 19151552, 20324096, 21887488, 31121272, 32125184, 35567168, 38303104, 40648192, 62242544, 64250368, 71134336, 76606208, 124485088, 142268672, 153212416, 248970176, 284537344, 497940352, 995880704, 1991761408]

約数ペア:

[(1, 1991761408), (2, 995880704), (4, 497940352), (7, 284537344), (8, 248970176), (13, 153212416), (14, 142268672), (16, 124485088), (26, 76606208), (28, 71134336), (31, 64250368), (32, 62242544), (49, 40648192), (52, 38303104), (56, 35567168), (62, 32125184), (64, 31121272), (91, 21887488), (98, 20324096), (104, 19151552), (112, 17783584), (124, 16062592), (128, 15560636), (182, 10943744), (196, 10162048), (197, 10110464), (208, 9575776), (217, 9178624), (224, 8891792), (248, 8031296), (256, 7780318), (364, 5471872), (392, 5081024), (394, 5055232), (403, 4942336), (416, 4787888), (434, 4589312), (448, 4445896), (496, 4015648), (512, 3890159), (637, 3126784), (728, 2735936), (784, 2540512), (788, 2527616), (806, 2471168), (832, 2393944), (868, 2294656), (896, 2222948), (992, 2007824), (1274, 1563392), (1379, 1444352), (1456, 1367968), (1519, 1311232), (1568, 1270256), (1576, 1263808), (1612, 1235584), (1664, 1196972), (1736, 1147328), (1792, 1111474), (1984, 1003912), (2548, 781696), (2561, 777728), (2758, 722176), (2821, 706048), (2912, 683984), (3038, 655616), (3136, 635128), (3152, 631904), (3224, 617792), (3328, 598486), (3472, 573664), (3584, 555737), (3968, 501956), (5096, 390848), (5122, 388864), (5516, 361088), (5642, 353024), (5824, 341992), (6076, 327808), (6107, 326144), (6272, 317564), (6304, 315952), (6448, 308896), (6656, 299243), (6944, 286832), (7936, 250978), (9653, 206336), (10192, 195424), (10244, 194432), (11032, 180544), (11284, 176512), (11648, 170996), (12152, 163904), (12214, 163072), (12544, 158782), (12608, 157976), (12896, 154448), (13888, 143416), (15872, 125489), (17927, 111104), (19306, 103168), (19747, 100864), (20384, 97712), (20488, 97216), (22064, 90272), (22568, 88256), (23296, 85498), (24304, 81952), (24428, 81536), (25088, 79391), (25216, 78988), (25792, 77224), (27776, 71708), (35854, 55552), (38612, 51584), (39494, 50432), (40768, 48856), (40976, 48608), (42749, 46592), (44128, 45136)]