18720054

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{431}}^1$

素因数の和:585

約数の個数: 48

約数和(自身を含む): 43130880

約数和(自身を除く): 24410826

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 127, 171, 254, 342, 381, 431, 762, 862, 1143, 1293, 2286, 2413, 2586, 3879, 4826, 7239, 7758, 8189, 14478, 16378, 21717, 24567, 43434, 49134, 54737, 73701, 109474, 147402, 164211, 328422, 492633, 985266, 1040003, 2080006, 3120009, 6240018, 9360027, 18720054]

約数ペア:

[(1, 18720054), (2, 9360027), (3, 6240018), (6, 3120009), (9, 2080006), (18, 1040003), (19, 985266), (38, 492633), (57, 328422), (114, 164211), (127, 147402), (171, 109474), (254, 73701), (342, 54737), (381, 49134), (431, 43434), (762, 24567), (862, 21717), (1143, 16378), (1293, 14478), (2286, 8189), (2413, 7758), (2586, 7239), (3879, 4826)]