18689176

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{449}}^1$

素因数の和:520

約数の個数: 48

約数和(自身を含む): 39501000

約数和(自身を除く): 20811824

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 121, 172, 242, 344, 449, 473, 484, 898, 946, 968, 1796, 1892, 3592, 3784, 4939, 5203, 9878, 10406, 19307, 19756, 20812, 38614, 39512, 41624, 54329, 77228, 108658, 154456, 212377, 217316, 424754, 434632, 849508, 1699016, 2336147, 4672294, 9344588, 18689176]

約数ペア:

[(1, 18689176), (2, 9344588), (4, 4672294), (8, 2336147), (11, 1699016), (22, 849508), (43, 434632), (44, 424754), (86, 217316), (88, 212377), (121, 154456), (172, 108658), (242, 77228), (344, 54329), (449, 41624), (473, 39512), (484, 38614), (898, 20812), (946, 19756), (968, 19307), (1796, 10406), (1892, 9878), (3592, 5203), (3784, 4939)]