21175521

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1\times {\mathrm{839}}^1$

素因数の和:1068

約数の個数: 16

約数和(自身を含む): 29030400

約数和(自身を除く): 7854879

約数列:

[1, 3, 47, 141, 179, 537, 839, 2517, 8413, 25239, 39433, 118299, 150181, 450543, 7058507, 21175521]

約数ペア:

[(1, 21175521), (3, 7058507), (47, 450543), (141, 150181), (179, 118299), (537, 39433), (839, 25239), (2517, 8413)]