19938688

素因数分解:

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

素因数の和:73

約数の個数: 144

約数和(自身を含む): 53546940

約数和(自身を除く): 33608252

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 17, 22, 28, 32, 34, 44, 49, 56, 64, 68, 77, 88, 98, 112, 119, 128, 136, 154, 176, 187, 196, 224, 238, 272, 289, 308, 352, 374, 392, 448, 476, 539, 544, 578, 616, 704, 748, 784, 833, 896, 952, 1078, 1088, 1156, 1232, 1309, 1408, 1496, 1568, 1666, 1904, 2023, 2156, 2176, 2312, 2464, 2618, 2992, 3136, 3179, 3332, 3808, 4046, 4312, 4624, 4928, 5236, 5984, 6272, 6358, 6664, 7616, 8092, 8624, 9163, 9248, 9856, 10472, 11968, 12716, 13328, 14161, 15232, 16184, 17248, 18326, 18496, 20944, 22253, 23936, 25432, 26656, 28322, 32368, 34496, 36652, 36992, 41888, 44506, 50864, 53312, 56644, 64736, 68992, 73304, 83776, 89012, 101728, 106624, 113288, 129472, 146608, 155771, 167552, 178024, 203456, 226576, 258944, 293216, 311542, 356048, 406912, 453152, 586432, 623084, 712096, 906304, 1172864, 1246168, 1424192, 1812608, 2492336, 2848384, 4984672, 9969344, 19938688]

約数ペア:

[(1, 19938688), (2, 9969344), (4, 4984672), (7, 2848384), (8, 2492336), (11, 1812608), (14, 1424192), (16, 1246168), (17, 1172864), (22, 906304), (28, 712096), (32, 623084), (34, 586432), (44, 453152), (49, 406912), (56, 356048), (64, 311542), (68, 293216), (77, 258944), (88, 226576), (98, 203456), (112, 178024), (119, 167552), (128, 155771), (136, 146608), (154, 129472), (176, 113288), (187, 106624), (196, 101728), (224, 89012), (238, 83776), (272, 73304), (289, 68992), (308, 64736), (352, 56644), (374, 53312), (392, 50864), (448, 44506), (476, 41888), (539, 36992), (544, 36652), (578, 34496), (616, 32368), (704, 28322), (748, 26656), (784, 25432), (833, 23936), (896, 22253), (952, 20944), (1078, 18496), (1088, 18326), (1156, 17248), (1232, 16184), (1309, 15232), (1408, 14161), (1496, 13328), (1568, 12716), (1666, 11968), (1904, 10472), (2023, 9856), (2156, 9248), (2176, 9163), (2312, 8624), (2464, 8092), (2618, 7616), (2992, 6664), (3136, 6358), (3179, 6272), (3332, 5984), (3808, 5236), (4046, 4928), (4312, 4624)]