20541983

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{739}}^1$

素因数の和:795

約数の個数: 24

約数和(自身を含む): 27066240

約数和(自身を除く): 6524257

約数列:

[1, 7, 11, 19, 77, 133, 209, 361, 739, 1463, 2527, 3971, 5173, 8129, 14041, 27797, 56903, 98287, 154451, 266779, 1081157, 1867453, 2934569, 20541983]

約数ペア:

[(1, 20541983), (7, 2934569), (11, 1867453), (19, 1081157), (77, 266779), (133, 154451), (209, 98287), (361, 56903), (739, 27797), (1463, 14041), (2527, 8129), (3971, 5173)]