28008963

素因数分解:

$3^3\times {\mathrm{23}}^2\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:145

約数の個数: 48

約数和(自身を含む): 45390240

約数和(自身を除く): 17381277

約数列:

[1, 3, 9, 23, 27, 37, 53, 69, 111, 159, 207, 333, 477, 529, 621, 851, 999, 1219, 1431, 1587, 1961, 2553, 3657, 4761, 5883, 7659, 10971, 14283, 17649, 19573, 22977, 28037, 32913, 45103, 52947, 58719, 84111, 135309, 176157, 252333, 405927, 528471, 756999, 1037369, 1217781, 3112107, 9336321, 28008963]

約数ペア:

[(1, 28008963), (3, 9336321), (9, 3112107), (23, 1217781), (27, 1037369), (37, 756999), (53, 528471), (69, 405927), (111, 252333), (159, 176157), (207, 135309), (333, 84111), (477, 58719), (529, 52947), (621, 45103), (851, 32913), (999, 28037), (1219, 22977), (1431, 19573), (1587, 17649), (1961, 14283), (2553, 10971), (3657, 7659), (4761, 5883)]