20688633

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1091}}^1$

素因数の和:1154

約数の個数: 36

約数和(自身を含む): 35603568

約数和(自身を除く): 14914935

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 1091, 2107, 2709, 3273, 6321, 7637, 9819, 18963, 22911, 46913, 53459, 68733, 140739, 160377, 328391, 422217, 481131, 985173, 2298737, 2955519, 6896211, 20688633]

約数ペア:

[(1, 20688633), (3, 6896211), (7, 2955519), (9, 2298737), (21, 985173), (43, 481131), (49, 422217), (63, 328391), (129, 160377), (147, 140739), (301, 68733), (387, 53459), (441, 46913), (903, 22911), (1091, 18963), (2107, 9819), (2709, 7637), (3273, 6321)]