12811721

素因数分解:

${\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{43}}^2$

素因数の和:153

約数の個数: 18

約数和(自身を含む): 14549598

約数和(自身を除く): 1737877

約数列:

[1, 13, 41, 43, 169, 533, 559, 1763, 1849, 6929, 7267, 22919, 24037, 75809, 297947, 312481, 985517, 12811721]

約数ペア:

[(1, 12811721), (13, 985517), (41, 312481), (43, 297947), (169, 75809), (533, 24037), (559, 22919), (1763, 7267), (1849, 6929)]