997857

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:397

約数の個数: 24

約数和(自身を含む): 1687296

約数和(自身を除く): 689439

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 337, 423, 987, 1011, 2359, 2961, 3033, 7077, 15839, 21231, 47517, 110873, 142551, 332619, 997857]

約数ペア:

[(1, 997857), (3, 332619), (7, 142551), (9, 110873), (21, 47517), (47, 21231), (63, 15839), (141, 7077), (329, 3033), (337, 2961), (423, 2359), (987, 1011)]