21536291

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{839}}^1$

素因数の和:1058

約数の個数: 16

約数和(自身を含む): 26073600

約数和(自身を除く): 4537309

約数列:

[1, 7, 19, 133, 193, 839, 1351, 3667, 5873, 15941, 25669, 111587, 161927, 1133489, 3076613, 21536291]

約数ペア:

[(1, 21536291), (7, 3076613), (19, 1133489), (133, 161927), (193, 111587), (839, 25669), (1351, 15941), (3667, 5873)]