21370496

素因数分解:

$2^7\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1$

素因数の和:122

約数の個数: 128

約数和(自身を含む): 54639360

約数和(自身を除く): 33268864

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 23, 28, 32, 34, 46, 56, 61, 64, 68, 92, 112, 119, 122, 128, 136, 161, 184, 224, 238, 244, 272, 322, 368, 391, 427, 448, 476, 488, 544, 644, 736, 782, 854, 896, 952, 976, 1037, 1088, 1288, 1403, 1472, 1564, 1708, 1904, 1952, 2074, 2176, 2576, 2737, 2806, 2944, 3128, 3416, 3808, 3904, 4148, 5152, 5474, 5612, 6256, 6832, 7259, 7616, 7808, 8296, 9821, 10304, 10948, 11224, 12512, 13664, 14518, 15232, 16592, 19642, 20608, 21896, 22448, 23851, 25024, 27328, 29036, 33184, 39284, 43792, 44896, 47702, 50048, 54656, 58072, 66368, 78568, 87584, 89792, 95404, 116144, 132736, 157136, 166957, 175168, 179584, 190808, 232288, 314272, 333914, 350336, 381616, 464576, 628544, 667828, 763232, 929152, 1257088, 1335656, 1526464, 2671312, 3052928, 5342624, 10685248, 21370496]

約数ペア:

[(1, 21370496), (2, 10685248), (4, 5342624), (7, 3052928), (8, 2671312), (14, 1526464), (16, 1335656), (17, 1257088), (23, 929152), (28, 763232), (32, 667828), (34, 628544), (46, 464576), (56, 381616), (61, 350336), (64, 333914), (68, 314272), (92, 232288), (112, 190808), (119, 179584), (122, 175168), (128, 166957), (136, 157136), (161, 132736), (184, 116144), (224, 95404), (238, 89792), (244, 87584), (272, 78568), (322, 66368), (368, 58072), (391, 54656), (427, 50048), (448, 47702), (476, 44896), (488, 43792), (544, 39284), (644, 33184), (736, 29036), (782, 27328), (854, 25024), (896, 23851), (952, 22448), (976, 21896), (1037, 20608), (1088, 19642), (1288, 16592), (1403, 15232), (1472, 14518), (1564, 13664), (1708, 12512), (1904, 11224), (1952, 10948), (2074, 10304), (2176, 9821), (2576, 8296), (2737, 7808), (2806, 7616), (2944, 7259), (3128, 6832), (3416, 6256), (3808, 5612), (3904, 5474), (4148, 5152)]