20289283

素因数分解:

$7^2\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:120

約数の個数: 36

約数和(自身を含む): 26407872

約数和(自身を除く): 6118589

約数列:

[1, 7, 19, 31, 37, 49, 133, 217, 259, 361, 589, 703, 931, 1147, 1519, 1813, 2527, 4123, 4921, 8029, 11191, 13357, 17689, 21793, 28861, 34447, 56203, 78337, 93499, 152551, 414067, 548359, 654493, 1067857, 2898469, 20289283]

約数ペア:

[(1, 20289283), (7, 2898469), (19, 1067857), (31, 654493), (37, 548359), (49, 414067), (133, 152551), (217, 93499), (259, 78337), (361, 56203), (589, 34447), (703, 28861), (931, 21793), (1147, 17689), (1519, 13357), (1813, 11191), (2527, 8029), (4123, 4921)]