261777152

素因数分解:

$2^8\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{661}}^1$

素因数の和:714

約数の個数: 144

約数和(自身を含む): 681976512

約数和(自身を除く): 420199360

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 26, 28, 32, 34, 52, 56, 64, 68, 91, 104, 112, 119, 128, 136, 182, 208, 221, 224, 238, 256, 272, 364, 416, 442, 448, 476, 544, 661, 728, 832, 884, 896, 952, 1088, 1322, 1456, 1547, 1664, 1768, 1792, 1904, 2176, 2644, 2912, 3094, 3328, 3536, 3808, 4352, 4627, 5288, 5824, 6188, 7072, 7616, 8593, 9254, 10576, 11237, 11648, 12376, 14144, 15232, 17186, 18508, 21152, 22474, 23296, 24752, 28288, 30464, 34372, 37016, 42304, 44948, 49504, 56576, 60151, 68744, 74032, 78659, 84608, 89896, 99008, 120302, 137488, 146081, 148064, 157318, 169216, 179792, 198016, 240604, 274976, 292162, 296128, 314636, 359584, 396032, 481208, 549952, 584324, 592256, 629272, 719168, 962416, 1022567, 1099904, 1168648, 1184512, 1258544, 1438336, 1924832, 2045134, 2199808, 2337296, 2517088, 2876672, 3849664, 4090268, 4674592, 5034176, 7699328, 8180536, 9349184, 10068352, 15398656, 16361072, 18698368, 20136704, 32722144, 37396736, 65444288, 130888576, 261777152]

約数ペア:

[(1, 261777152), (2, 130888576), (4, 65444288), (7, 37396736), (8, 32722144), (13, 20136704), (14, 18698368), (16, 16361072), (17, 15398656), (26, 10068352), (28, 9349184), (32, 8180536), (34, 7699328), (52, 5034176), (56, 4674592), (64, 4090268), (68, 3849664), (91, 2876672), (104, 2517088), (112, 2337296), (119, 2199808), (128, 2045134), (136, 1924832), (182, 1438336), (208, 1258544), (221, 1184512), (224, 1168648), (238, 1099904), (256, 1022567), (272, 962416), (364, 719168), (416, 629272), (442, 592256), (448, 584324), (476, 549952), (544, 481208), (661, 396032), (728, 359584), (832, 314636), (884, 296128), (896, 292162), (952, 274976), (1088, 240604), (1322, 198016), (1456, 179792), (1547, 169216), (1664, 157318), (1768, 148064), (1792, 146081), (1904, 137488), (2176, 120302), (2644, 99008), (2912, 89896), (3094, 84608), (3328, 78659), (3536, 74032), (3808, 68744), (4352, 60151), (4627, 56576), (5288, 49504), (5824, 44948), (6188, 42304), (7072, 37016), (7616, 34372), (8593, 30464), (9254, 28288), (10576, 24752), (11237, 23296), (11648, 22474), (12376, 21152), (14144, 18508), (15232, 17186)]