19998271232

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{1061}}^1$

素因数の和:1226

約数の個数: 144

約数和(自身を含む): 43605584064

約数和(自身を除く): 23607312832

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 61, 64, 68, 71, 122, 128, 136, 142, 244, 256, 272, 284, 488, 544, 568, 976, 1037, 1061, 1088, 1136, 1207, 1952, 2074, 2122, 2176, 2272, 2414, 3904, 4148, 4244, 4331, 4352, 4544, 4828, 7808, 8296, 8488, 8662, 9088, 9656, 15616, 16592, 16976, 17324, 18037, 18176, 19312, 33184, 33952, 34648, 36074, 38624, 64721, 66368, 67904, 69296, 72148, 73627, 75331, 77248, 129442, 132736, 135808, 138592, 144296, 147254, 150662, 154496, 258884, 265472, 271616, 277184, 288592, 294508, 301324, 308992, 517768, 554368, 577184, 589016, 602648, 1035536, 1100257, 1108736, 1154368, 1178032, 1205296, 1280627, 2071072, 2200514, 2308736, 2356064, 2410592, 2561254, 4142144, 4401028, 4595191, 4617472, 4712128, 4821184, 5122508, 8284288, 8802056, 9190382, 9424256, 9642368, 10245016, 16568576, 17604112, 18380764, 18848512, 19284736, 20490032, 35208224, 36761528, 40980064, 70416448, 73523056, 78118247, 81960128, 140832896, 147046112, 156236494, 163920256, 281665792, 294092224, 312472988, 327840512, 588184448, 624945976, 1176368896, 1249891952, 2499783904, 4999567808, 9999135616, 19998271232]

約数ペア:

[(1, 19998271232), (2, 9999135616), (4, 4999567808), (8, 2499783904), (16, 1249891952), (17, 1176368896), (32, 624945976), (34, 588184448), (61, 327840512), (64, 312472988), (68, 294092224), (71, 281665792), (122, 163920256), (128, 156236494), (136, 147046112), (142, 140832896), (244, 81960128), (256, 78118247), (272, 73523056), (284, 70416448), (488, 40980064), (544, 36761528), (568, 35208224), (976, 20490032), (1037, 19284736), (1061, 18848512), (1088, 18380764), (1136, 17604112), (1207, 16568576), (1952, 10245016), (2074, 9642368), (2122, 9424256), (2176, 9190382), (2272, 8802056), (2414, 8284288), (3904, 5122508), (4148, 4821184), (4244, 4712128), (4331, 4617472), (4352, 4595191), (4544, 4401028), (4828, 4142144), (7808, 2561254), (8296, 2410592), (8488, 2356064), (8662, 2308736), (9088, 2200514), (9656, 2071072), (15616, 1280627), (16592, 1205296), (16976, 1178032), (17324, 1154368), (18037, 1108736), (18176, 1100257), (19312, 1035536), (33184, 602648), (33952, 589016), (34648, 577184), (36074, 554368), (38624, 517768), (64721, 308992), (66368, 301324), (67904, 294508), (69296, 288592), (72148, 277184), (73627, 271616), (75331, 265472), (77248, 258884), (129442, 154496), (132736, 150662), (135808, 147254), (138592, 144296)]