18386456

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{113}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 38844360

約数和(自身を除く): 20457904

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 113, 172, 226, 344, 452, 473, 904, 946, 1243, 1849, 1892, 2486, 3698, 3784, 4859, 4972, 7396, 9718, 9944, 14792, 19436, 20339, 38872, 40678, 53449, 81356, 106898, 162712, 208937, 213796, 417874, 427592, 835748, 1671496, 2298307, 4596614, 9193228, 18386456]

約数ペア:

[(1, 18386456), (2, 9193228), (4, 4596614), (8, 2298307), (11, 1671496), (22, 835748), (43, 427592), (44, 417874), (86, 213796), (88, 208937), (113, 162712), (172, 106898), (226, 81356), (344, 53449), (452, 40678), (473, 38872), (904, 20339), (946, 19436), (1243, 14792), (1849, 9944), (1892, 9718), (2486, 7396), (3698, 4972), (3784, 4859)]