18639292

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 39416832

約数和(自身を除く): 20777540

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 103, 161, 206, 281, 322, 412, 562, 644, 721, 1124, 1442, 1967, 2369, 2884, 3934, 4738, 6463, 7868, 9476, 12926, 16583, 25852, 28943, 33166, 45241, 57886, 66332, 90482, 115772, 180964, 202601, 405202, 665689, 810404, 1331378, 2662756, 4659823, 9319646, 18639292]

約数ペア:

[(1, 18639292), (2, 9319646), (4, 4659823), (7, 2662756), (14, 1331378), (23, 810404), (28, 665689), (46, 405202), (92, 202601), (103, 180964), (161, 115772), (206, 90482), (281, 66332), (322, 57886), (412, 45241), (562, 33166), (644, 28943), (721, 25852), (1124, 16583), (1442, 12926), (1967, 9476), (2369, 7868), (2884, 6463), (3934, 4738)]