20400919

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{4999}}^1$

素因数の和:5070

約数の個数: 16

約数和(自身を含む): 25920000

約数和(自身を除く): 5519081

約数列:

[1, 7, 11, 53, 77, 371, 583, 4081, 4999, 34993, 54989, 264947, 384923, 1854629, 2914417, 20400919]

約数ペア:

[(1, 20400919), (7, 2914417), (11, 1854629), (53, 384923), (77, 264947), (371, 54989), (583, 34993), (4081, 4999)]