20927949

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 35020800

約数和(自身を除く): 14092851

約数列:

[1, 3, 7, 19, 21, 49, 57, 59, 127, 133, 147, 177, 381, 399, 413, 889, 931, 1121, 1239, 2413, 2667, 2793, 2891, 3363, 6223, 7239, 7493, 7847, 8673, 16891, 18669, 22479, 23541, 50673, 52451, 54929, 118237, 142367, 157353, 164787, 354711, 367157, 427101, 996569, 1101471, 2989707, 6975983, 20927949]

約数ペア:

[(1, 20927949), (3, 6975983), (7, 2989707), (19, 1101471), (21, 996569), (49, 427101), (57, 367157), (59, 354711), (127, 164787), (133, 157353), (147, 142367), (177, 118237), (381, 54929), (399, 52451), (413, 50673), (889, 23541), (931, 22479), (1121, 18669), (1239, 16891), (2413, 8673), (2667, 7847), (2793, 7493), (2891, 7239), (3363, 6223)]