19866119

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{2399}}^1$

素因数の和:2439

約数の個数: 18

約数和(自身を含む): 25034400

約数和(自身を除く): 5168281

約数列:

[1, 7, 13, 49, 91, 169, 637, 1183, 2399, 8281, 16793, 31187, 117551, 218309, 405431, 1528163, 2838017, 19866119]

約数ペア:

[(1, 19866119), (7, 2838017), (13, 1528163), (49, 405431), (91, 218309), (169, 117551), (637, 31187), (1183, 16793), (2399, 8281)]