12978581

素因数分解:

$7^2\times {\mathrm{11}}^3\times {\mathrm{199}}^1$

素因数の和:246

約数の個数: 24

約数和(自身を含む): 16689600

約数和(自身を除く): 3711019

約数列:

[1, 7, 11, 49, 77, 121, 199, 539, 847, 1331, 1393, 2189, 5929, 9317, 9751, 15323, 24079, 65219, 107261, 168553, 264869, 1179871, 1854083, 12978581]

約数ペア:

[(1, 12978581), (7, 1854083), (11, 1179871), (49, 264869), (77, 168553), (121, 107261), (199, 65219), (539, 24079), (847, 15323), (1331, 9751), (1393, 9317), (2189, 5929)]