21329487

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{107}}^2$

素因数の和:249

約数の個数: 30

約数和(自身を含む): 33561528

約数和(自身を除く): 12232041

約数列:

[1, 3, 9, 23, 27, 69, 81, 107, 207, 321, 621, 963, 1863, 2461, 2889, 7383, 8667, 11449, 22149, 34347, 66447, 103041, 199341, 263327, 309123, 789981, 927369, 2369943, 7109829, 21329487]

約数ペア:

[(1, 21329487), (3, 7109829), (9, 2369943), (23, 927369), (27, 789981), (69, 309123), (81, 263327), (107, 199341), (207, 103041), (321, 66447), (621, 34347), (963, 22149), (1863, 11449), (2461, 8667), (2889, 7383)]