20937728

素因数分解:

$2^{10}\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:177

約数の個数: 88

約数和(自身を含む): 50307072

約数和(自身を除く): 29369344

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 56, 64, 92, 112, 127, 128, 161, 184, 224, 254, 256, 322, 368, 448, 508, 512, 644, 736, 889, 896, 1016, 1024, 1288, 1472, 1778, 1792, 2032, 2576, 2921, 2944, 3556, 3584, 4064, 5152, 5842, 5888, 7112, 7168, 8128, 10304, 11684, 11776, 14224, 16256, 20447, 20608, 23368, 23552, 28448, 32512, 40894, 41216, 46736, 56896, 65024, 81788, 82432, 93472, 113792, 130048, 163576, 164864, 186944, 227584, 327152, 373888, 455168, 654304, 747776, 910336, 1308608, 1495552, 2617216, 2991104, 5234432, 10468864, 20937728]

約数ペア:

[(1, 20937728), (2, 10468864), (4, 5234432), (7, 2991104), (8, 2617216), (14, 1495552), (16, 1308608), (23, 910336), (28, 747776), (32, 654304), (46, 455168), (56, 373888), (64, 327152), (92, 227584), (112, 186944), (127, 164864), (128, 163576), (161, 130048), (184, 113792), (224, 93472), (254, 82432), (256, 81788), (322, 65024), (368, 56896), (448, 46736), (508, 41216), (512, 40894), (644, 32512), (736, 28448), (889, 23552), (896, 23368), (1016, 20608), (1024, 20447), (1288, 16256), (1472, 14224), (1778, 11776), (1792, 11684), (2032, 10304), (2576, 8128), (2921, 7168), (2944, 7112), (3556, 5888), (3584, 5842), (4064, 5152)]