19878309

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1009}}^1$

素因数の和:1225

約数の個数: 24

約数和(自身を含む): 31512000

約数和(自身を除く): 11633691

約数列:

[1, 3, 9, 11, 33, 99, 199, 597, 1009, 1791, 2189, 3027, 6567, 9081, 11099, 19701, 33297, 99891, 200791, 602373, 1807119, 2208701, 6626103, 19878309]

約数ペア:

[(1, 19878309), (3, 6626103), (9, 2208701), (11, 1807119), (33, 602373), (99, 200791), (199, 99891), (597, 33297), (1009, 19701), (1791, 11099), (2189, 9081), (3027, 6567)]