20802397

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{241}}^1$

素因数の和:337

約数の個数: 32

約数和(自身を含む): 27878400

約数和(自身を除く): 7076003

約数列:

[1, 7, 11, 19, 59, 77, 133, 209, 241, 413, 649, 1121, 1463, 1687, 2651, 4543, 4579, 7847, 12331, 14219, 18557, 32053, 50369, 86317, 99533, 156409, 270161, 352583, 1094863, 1891127, 2971771, 20802397]

約数ペア:

[(1, 20802397), (7, 2971771), (11, 1891127), (19, 1094863), (59, 352583), (77, 270161), (133, 156409), (209, 99533), (241, 86317), (413, 50369), (649, 32053), (1121, 18557), (1463, 14219), (1687, 12331), (2651, 7847), (4543, 4579)]