18546983

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{631}}^1$

素因数の和:687

約数の個数: 32

約数和(自身を含む): 25482240

約数和(自身を除く): 6935257

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 323, 631, 1547, 1729, 2261, 4199, 4417, 8203, 10727, 11989, 29393, 57421, 75089, 83923, 139451, 155857, 203813, 976157, 1090999, 1426691, 2649569, 18546983]

約数ペア:

[(1, 18546983), (7, 2649569), (13, 1426691), (17, 1090999), (19, 976157), (91, 203813), (119, 155857), (133, 139451), (221, 83923), (247, 75089), (323, 57421), (631, 29393), (1547, 11989), (1729, 10727), (2261, 8203), (4199, 4417)]