18954369

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{127}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 33226752

約数和(自身を除く): 14272383

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 103, 127, 161, 207, 309, 381, 483, 721, 889, 927, 1143, 1449, 2163, 2369, 2667, 2921, 6489, 7107, 8001, 8763, 13081, 16583, 20447, 21321, 26289, 39243, 49749, 61341, 91567, 117729, 149247, 184023, 274701, 300863, 824103, 902589, 2106041, 2707767, 6318123, 18954369]

約数ペア:

[(1, 18954369), (3, 6318123), (7, 2707767), (9, 2106041), (21, 902589), (23, 824103), (63, 300863), (69, 274701), (103, 184023), (127, 149247), (161, 117729), (207, 91567), (309, 61341), (381, 49749), (483, 39243), (721, 26289), (889, 21321), (927, 20447), (1143, 16583), (1449, 13081), (2163, 8763), (2369, 8001), (2667, 7107), (2921, 6489)]