21285232

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{457}}^1$

素因数の和:577

約数の個数: 40

約数和(自身を含む): 42934752

約数和(自身を除く): 21649520

約数列:

[1, 2, 4, 8, 16, 41, 71, 82, 142, 164, 284, 328, 457, 568, 656, 914, 1136, 1828, 2911, 3656, 5822, 7312, 11644, 18737, 23288, 32447, 37474, 46576, 64894, 74948, 129788, 149896, 259576, 299792, 519152, 1330327, 2660654, 5321308, 10642616, 21285232]

約数ペア:

[(1, 21285232), (2, 10642616), (4, 5321308), (8, 2660654), (16, 1330327), (41, 519152), (71, 299792), (82, 259576), (142, 149896), (164, 129788), (284, 74948), (328, 64894), (457, 46576), (568, 37474), (656, 32447), (914, 23288), (1136, 18737), (1828, 11644), (2911, 7312), (3656, 5822)]