21004569

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{10957}}^1$

素因数の和:11037

約数の個数: 16

約数和(自身を含む): 31559040

約数和(自身を除く): 10554471

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 10957, 32871, 98613, 295839, 777947, 2333841, 7001523, 21004569]

約数ペア:

[(1, 21004569), (3, 7001523), (9, 2333841), (27, 777947), (71, 295839), (213, 98613), (639, 32871), (1917, 10957)]