12720918

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{839}}^1$

素因数の和:889

約数の個数: 48

約数和(自身を含む): 30723840

約数和(自身を除く): 18002922

約数列:

[1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 361, 399, 722, 798, 839, 1083, 1678, 2166, 2517, 2527, 5034, 5054, 5873, 7581, 11746, 15162, 15941, 17619, 31882, 35238, 47823, 95646, 111587, 223174, 302879, 334761, 605758, 669522, 908637, 1817274, 2120153, 4240306, 6360459, 12720918]

約数ペア:

[(1, 12720918), (2, 6360459), (3, 4240306), (6, 2120153), (7, 1817274), (14, 908637), (19, 669522), (21, 605758), (38, 334761), (42, 302879), (57, 223174), (114, 111587), (133, 95646), (266, 47823), (361, 35238), (399, 31882), (722, 17619), (798, 15941), (839, 15162), (1083, 11746), (1678, 7581), (2166, 5873), (2517, 5054), (2527, 5034)]