21120484

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1459}}^1$

素因数の和:1528

約数の個数: 48

約数和(自身を含む): 47093760

約数和(自身を除く): 25973276

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 47, 77, 94, 154, 188, 308, 329, 517, 658, 1034, 1316, 1459, 2068, 2918, 3619, 5836, 7238, 10213, 14476, 16049, 20426, 32098, 40852, 64196, 68573, 112343, 137146, 224686, 274292, 449372, 480011, 754303, 960022, 1508606, 1920044, 3017212, 5280121, 10560242, 21120484]

約数ペア:

[(1, 21120484), (2, 10560242), (4, 5280121), (7, 3017212), (11, 1920044), (14, 1508606), (22, 960022), (28, 754303), (44, 480011), (47, 449372), (77, 274292), (94, 224686), (154, 137146), (188, 112343), (308, 68573), (329, 64196), (517, 40852), (658, 32098), (1034, 20426), (1316, 16049), (1459, 14476), (2068, 10213), (2918, 7238), (3619, 5836)]