21245439

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{1873}}^1$

素因数の和:2094

約数の個数: 16

約数和(自身を含む): 29984000

約数和(自身を除く): 8738561

約数列:

[1, 3, 19, 57, 199, 597, 1873, 3781, 5619, 11343, 35587, 106761, 372727, 1118181, 7081813, 21245439]

約数ペア:

[(1, 21245439), (3, 7081813), (19, 1118181), (57, 372727), (199, 106761), (597, 35587), (1873, 11343), (3781, 5619)]