81005691

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{769}}^1$

素因数の和:895

約数の個数: 32

約数和(自身を含む): 121253440

約数和(自身を除く): 40247749

約数列:

[1, 3, 13, 37, 39, 73, 111, 219, 481, 769, 949, 1443, 2307, 2701, 2847, 8103, 9997, 28453, 29991, 35113, 56137, 85359, 105339, 168411, 369889, 729781, 1109667, 2077069, 2189343, 6231207, 27001897, 81005691]

約数ペア:

[(1, 81005691), (3, 27001897), (13, 6231207), (37, 2189343), (39, 2077069), (73, 1109667), (111, 729781), (219, 369889), (481, 168411), (769, 105339), (949, 85359), (1443, 56137), (2307, 35113), (2701, 29991), (2847, 28453), (8103, 9997)]