20818336

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:123

約数の個数: 144

約数和(自身を含む): 55847232

約数和(自身を除く): 35028896

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 17, 22, 28, 32, 34, 44, 49, 56, 68, 71, 77, 88, 98, 112, 119, 136, 142, 154, 176, 187, 196, 224, 238, 272, 284, 308, 352, 374, 392, 476, 497, 539, 544, 568, 616, 748, 781, 784, 833, 952, 994, 1078, 1136, 1207, 1232, 1309, 1496, 1562, 1568, 1666, 1904, 1988, 2156, 2272, 2414, 2464, 2618, 2992, 3124, 3332, 3479, 3808, 3976, 4312, 4828, 5236, 5467, 5984, 6248, 6664, 6958, 7952, 8449, 8624, 9163, 9656, 10472, 10934, 12496, 13277, 13328, 13916, 15904, 16898, 17248, 18326, 19312, 20944, 21868, 24992, 26554, 26656, 27832, 33796, 36652, 38269, 38624, 41888, 43736, 53108, 55664, 59143, 67592, 73304, 76538, 87472, 92939, 106216, 111328, 118286, 135184, 146608, 153076, 174944, 185878, 212432, 236572, 270368, 293216, 306152, 371756, 424864, 473144, 612304, 650573, 743512, 946288, 1224608, 1301146, 1487024, 1892576, 2602292, 2974048, 5204584, 10409168, 20818336]

約数ペア:

[(1, 20818336), (2, 10409168), (4, 5204584), (7, 2974048), (8, 2602292), (11, 1892576), (14, 1487024), (16, 1301146), (17, 1224608), (22, 946288), (28, 743512), (32, 650573), (34, 612304), (44, 473144), (49, 424864), (56, 371756), (68, 306152), (71, 293216), (77, 270368), (88, 236572), (98, 212432), (112, 185878), (119, 174944), (136, 153076), (142, 146608), (154, 135184), (176, 118286), (187, 111328), (196, 106216), (224, 92939), (238, 87472), (272, 76538), (284, 73304), (308, 67592), (352, 59143), (374, 55664), (392, 53108), (476, 43736), (497, 41888), (539, 38624), (544, 38269), (568, 36652), (616, 33796), (748, 27832), (781, 26656), (784, 26554), (833, 24992), (952, 21868), (994, 20944), (1078, 19312), (1136, 18326), (1207, 17248), (1232, 16898), (1309, 15904), (1496, 13916), (1562, 13328), (1568, 13277), (1666, 12496), (1904, 10934), (1988, 10472), (2156, 9656), (2272, 9163), (2414, 8624), (2464, 8449), (2618, 7952), (2992, 6958), (3124, 6664), (3332, 6248), (3479, 5984), (3808, 5467), (3976, 5236), (4312, 4828)]