20815293

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{5591}}^1$

素因数の和:5684

約数の個数: 16

約数和(自身を含む): 29794176

約数和(自身を除く): 8978883

約数列:

[1, 3, 17, 51, 73, 219, 1241, 3723, 5591, 16773, 95047, 285141, 408143, 1224429, 6938431, 20815293]

約数ペア:

[(1, 20815293), (3, 6938431), (17, 1224429), (51, 408143), (73, 285141), (219, 95047), (1241, 16773), (3723, 5591)]