128275707

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{8689}}^1$

素因数の和:8755

約数の個数: 32

約数和(自身を含む): 211340800

約数和(自身を除く): 83065093

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 2109, 4921, 8689, 14763, 26067, 60823, 165091, 182469, 321493, 495273, 964479, 1155637, 2250451, 3466911, 6108367, 6751353, 18325101, 42758569, 128275707]

約数ペア:

[(1, 128275707), (3, 42758569), (7, 18325101), (19, 6751353), (21, 6108367), (37, 3466911), (57, 2250451), (111, 1155637), (133, 964479), (259, 495273), (399, 321493), (703, 182469), (777, 165091), (2109, 60823), (4921, 26067), (8689, 14763)]