81211570

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{1637}}^1$

素因数の和:1707

約数の個数: 48

約数和(自身を含む): 164697624

約数和(自身を除く): 83486054

約数列:

[1, 2, 5, 10, 11, 22, 41, 55, 82, 110, 121, 205, 242, 410, 451, 605, 902, 1210, 1637, 2255, 3274, 4510, 4961, 8185, 9922, 16370, 18007, 24805, 36014, 49610, 67117, 90035, 134234, 180070, 198077, 335585, 396154, 671170, 738287, 990385, 1476574, 1980770, 3691435, 7382870, 8121157, 16242314, 40605785, 81211570]

約数ペア:

[(1, 81211570), (2, 40605785), (5, 16242314), (10, 8121157), (11, 7382870), (22, 3691435), (41, 1980770), (55, 1476574), (82, 990385), (110, 738287), (121, 671170), (205, 396154), (242, 335585), (410, 198077), (451, 180070), (605, 134234), (902, 90035), (1210, 67117), (1637, 49610), (2255, 36014), (3274, 24805), (4510, 18007), (4961, 16370), (8185, 9922)]