21187712

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:158

約数の個数: 128

約数和(自身を含む): 55520640

約数和(自身を除く): 34332928

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 26, 28, 32, 34, 52, 56, 64, 68, 91, 104, 107, 112, 119, 128, 136, 182, 208, 214, 221, 224, 238, 272, 364, 416, 428, 442, 448, 476, 544, 728, 749, 832, 856, 884, 896, 952, 1088, 1391, 1456, 1498, 1547, 1664, 1712, 1768, 1819, 1904, 2176, 2782, 2912, 2996, 3094, 3424, 3536, 3638, 3808, 5564, 5824, 5992, 6188, 6848, 7072, 7276, 7616, 9737, 11128, 11648, 11984, 12376, 12733, 13696, 14144, 14552, 15232, 19474, 22256, 23647, 23968, 24752, 25466, 28288, 29104, 38948, 44512, 47294, 47936, 49504, 50932, 58208, 77896, 89024, 94588, 95872, 99008, 101864, 116416, 155792, 165529, 178048, 189176, 198016, 203728, 232832, 311584, 331058, 378352, 407456, 623168, 662116, 756704, 814912, 1246336, 1324232, 1513408, 1629824, 2648464, 3026816, 5296928, 10593856, 21187712]

約数ペア:

[(1, 21187712), (2, 10593856), (4, 5296928), (7, 3026816), (8, 2648464), (13, 1629824), (14, 1513408), (16, 1324232), (17, 1246336), (26, 814912), (28, 756704), (32, 662116), (34, 623168), (52, 407456), (56, 378352), (64, 331058), (68, 311584), (91, 232832), (104, 203728), (107, 198016), (112, 189176), (119, 178048), (128, 165529), (136, 155792), (182, 116416), (208, 101864), (214, 99008), (221, 95872), (224, 94588), (238, 89024), (272, 77896), (364, 58208), (416, 50932), (428, 49504), (442, 47936), (448, 47294), (476, 44512), (544, 38948), (728, 29104), (749, 28288), (832, 25466), (856, 24752), (884, 23968), (896, 23647), (952, 22256), (1088, 19474), (1391, 15232), (1456, 14552), (1498, 14144), (1547, 13696), (1664, 12733), (1712, 12376), (1768, 11984), (1819, 11648), (1904, 11128), (2176, 9737), (2782, 7616), (2912, 7276), (2996, 7072), (3094, 6848), (3424, 6188), (3536, 5992), (3638, 5824), (3808, 5564)]