19893391

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^2\times {\mathrm{53}}^1$

素因数の和:175

約数の個数: 24

約数和(自身を含む): 24533280

約数和(自身を除く): 4639889

約数列:

[1, 7, 29, 43, 53, 203, 301, 371, 1247, 1537, 1849, 2279, 8729, 10759, 12943, 15953, 53621, 66091, 97997, 375347, 462637, 685979, 2841913, 19893391]

約数ペア:

[(1, 19893391), (7, 2841913), (29, 685979), (43, 462637), (53, 375347), (203, 97997), (301, 66091), (371, 53621), (1247, 15953), (1537, 12943), (1849, 10759), (2279, 8729)]