20404485

素因数分解:

$3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{2621}}^1$

素因数の和:2805

約数の個数: 24

約数和(自身を含む): 35585784

約数和(自身を除く): 15181299

約数列:

[1, 3, 5, 9, 15, 45, 173, 519, 865, 1557, 2595, 2621, 7785, 7863, 13105, 23589, 39315, 117945, 453433, 1360299, 2267165, 4080897, 6801495, 20404485]

約数ペア:

[(1, 20404485), (3, 6801495), (5, 4080897), (9, 2267165), (15, 1360299), (45, 453433), (173, 117945), (519, 39315), (865, 23589), (1557, 13105), (2595, 7863), (2621, 7785)]