18986569

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{991}}^1$

素因数の和:1045

約数の個数: 24

約数和(自身を含む): 24427008

約数和(自身を除く): 5440439

約数列:

[1, 7, 17, 23, 49, 119, 161, 391, 833, 991, 1127, 2737, 6937, 16847, 19159, 22793, 48559, 117929, 159551, 387481, 825503, 1116857, 2712367, 18986569]

約数ペア:

[(1, 18986569), (7, 2712367), (17, 1116857), (23, 825503), (49, 387481), (119, 159551), (161, 117929), (391, 48559), (833, 22793), (991, 19159), (1127, 16847), (2737, 6937)]