21215368

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{911}}^1$

素因数の和:1029

約数の個数: 32

約数和(自身を含む): 41368320

約数和(自身を除く): 20152952

約数列:

[1, 2, 4, 8, 41, 71, 82, 142, 164, 284, 328, 568, 911, 1822, 2911, 3644, 5822, 7288, 11644, 23288, 37351, 64681, 74702, 129362, 149404, 258724, 298808, 517448, 2651921, 5303842, 10607684, 21215368]

約数ペア:

[(1, 21215368), (2, 10607684), (4, 5303842), (8, 2651921), (41, 517448), (71, 298808), (82, 258724), (142, 149404), (164, 129362), (284, 74702), (328, 64681), (568, 37351), (911, 23288), (1822, 11644), (2911, 7288), (3644, 5822)]