20667248

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:222

約数の個数: 80

約数和(自身を含む): 48854016

約数和(自身を除く): 28186768

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 56, 71, 92, 112, 113, 142, 161, 184, 226, 284, 322, 368, 452, 497, 568, 644, 791, 904, 994, 1136, 1288, 1582, 1633, 1808, 1988, 2576, 2599, 3164, 3266, 3976, 5198, 6328, 6532, 7952, 8023, 10396, 11431, 12656, 13064, 16046, 18193, 20792, 22862, 26128, 32092, 36386, 41584, 45724, 56161, 64184, 72772, 91448, 112322, 128368, 145544, 182896, 184529, 224644, 291088, 369058, 449288, 738116, 898576, 1291703, 1476232, 2583406, 2952464, 5166812, 10333624, 20667248]

約数ペア:

[(1, 20667248), (2, 10333624), (4, 5166812), (7, 2952464), (8, 2583406), (14, 1476232), (16, 1291703), (23, 898576), (28, 738116), (46, 449288), (56, 369058), (71, 291088), (92, 224644), (112, 184529), (113, 182896), (142, 145544), (161, 128368), (184, 112322), (226, 91448), (284, 72772), (322, 64184), (368, 56161), (452, 45724), (497, 41584), (568, 36386), (644, 32092), (791, 26128), (904, 22862), (994, 20792), (1136, 18193), (1288, 16046), (1582, 13064), (1633, 12656), (1808, 11431), (1988, 10396), (2576, 8023), (2599, 7952), (3164, 6532), (3266, 6328), (3976, 5198)]