21092456

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{353}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 49956480

約数和(自身を除く): 28864024

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 97, 154, 194, 308, 353, 388, 616, 679, 706, 776, 1067, 1358, 1412, 2134, 2471, 2716, 2824, 3883, 4268, 4942, 5432, 7469, 7766, 8536, 9884, 14938, 15532, 19768, 27181, 29876, 31064, 34241, 54362, 59752, 68482, 108724, 136964, 217448, 239687, 273928, 376651, 479374, 753302, 958748, 1506604, 1917496, 2636557, 3013208, 5273114, 10546228, 21092456]

約数ペア:

[(1, 21092456), (2, 10546228), (4, 5273114), (7, 3013208), (8, 2636557), (11, 1917496), (14, 1506604), (22, 958748), (28, 753302), (44, 479374), (56, 376651), (77, 273928), (88, 239687), (97, 217448), (154, 136964), (194, 108724), (308, 68482), (353, 59752), (388, 54362), (616, 34241), (679, 31064), (706, 29876), (776, 27181), (1067, 19768), (1358, 15532), (1412, 14938), (2134, 9884), (2471, 8536), (2716, 7766), (2824, 7469), (3883, 5432), (4268, 4942)]