81857775

素因数分解:

$3^1\times 5^2\times {\mathrm{733}}^1\times {\mathrm{1489}}^1$

素因数の和:2235

約数の個数: 24

約数和(自身を含む): 135613840

約数和(自身を除く): 53756065

約数列:

[1, 3, 5, 15, 25, 75, 733, 1489, 2199, 3665, 4467, 7445, 10995, 18325, 22335, 37225, 54975, 111675, 1091437, 3274311, 5457185, 16371555, 27285925, 81857775]

約数ペア:

[(1, 81857775), (3, 27285925), (5, 16371555), (15, 5457185), (25, 3274311), (75, 1091437), (733, 111675), (1489, 54975), (2199, 37225), (3665, 22335), (4467, 18325), (7445, 10995)]