19984503

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{727}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 15868041

約数列:

[1, 3, 7, 11, 17, 21, 33, 49, 51, 77, 119, 147, 187, 231, 357, 539, 561, 727, 833, 1309, 1617, 2181, 2499, 3927, 5089, 7997, 9163, 12359, 15267, 23991, 27489, 35623, 37077, 55979, 86513, 106869, 135949, 167937, 259539, 391853, 407847, 605591, 951643, 1175559, 1816773, 2854929, 6661501, 19984503]

約数ペア:

[(1, 19984503), (3, 6661501), (7, 2854929), (11, 1816773), (17, 1175559), (21, 951643), (33, 605591), (49, 407847), (51, 391853), (77, 259539), (119, 167937), (147, 135949), (187, 106869), (231, 86513), (357, 55979), (539, 37077), (561, 35623), (727, 27489), (833, 23991), (1309, 15267), (1617, 12359), (2181, 9163), (2499, 7997), (3927, 5089)]