28778288

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:151

約数の個数: 120

約数和(自身を含む): 73281024

約数和(自身を除く): 44502736

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 47, 49, 56, 71, 77, 88, 94, 98, 112, 142, 154, 176, 188, 196, 284, 308, 329, 376, 392, 497, 517, 539, 568, 616, 658, 752, 781, 784, 994, 1034, 1078, 1136, 1232, 1316, 1562, 1988, 2068, 2156, 2303, 2632, 3124, 3337, 3479, 3619, 3976, 4136, 4312, 4606, 5264, 5467, 6248, 6674, 6958, 7238, 7952, 8272, 8624, 9212, 10934, 12496, 13348, 13916, 14476, 18424, 21868, 23359, 25333, 26696, 27832, 28952, 36707, 36848, 38269, 43736, 46718, 50666, 53392, 55664, 57904, 73414, 76538, 87472, 93436, 101332, 146828, 153076, 163513, 186872, 202664, 256949, 293656, 306152, 327026, 373744, 405328, 513898, 587312, 612304, 654052, 1027796, 1308104, 1798643, 2055592, 2616208, 3597286, 4111184, 7194572, 14389144, 28778288]

約数ペア:

[(1, 28778288), (2, 14389144), (4, 7194572), (7, 4111184), (8, 3597286), (11, 2616208), (14, 2055592), (16, 1798643), (22, 1308104), (28, 1027796), (44, 654052), (47, 612304), (49, 587312), (56, 513898), (71, 405328), (77, 373744), (88, 327026), (94, 306152), (98, 293656), (112, 256949), (142, 202664), (154, 186872), (176, 163513), (188, 153076), (196, 146828), (284, 101332), (308, 93436), (329, 87472), (376, 76538), (392, 73414), (497, 57904), (517, 55664), (539, 53392), (568, 50666), (616, 46718), (658, 43736), (752, 38269), (781, 36848), (784, 36707), (994, 28952), (1034, 27832), (1078, 26696), (1136, 25333), (1232, 23359), (1316, 21868), (1562, 18424), (1988, 14476), (2068, 13916), (2156, 13348), (2303, 12496), (2632, 10934), (3124, 9212), (3337, 8624), (3479, 8272), (3619, 7952), (3976, 7238), (4136, 6958), (4312, 6674), (4606, 6248), (5264, 5467)]