20787963

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{23021}}^1$

素因数の和:23074

約数の個数: 16

約数和(自身を含む): 32414976

約数和(自身を除く): 11627013

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 23021, 69063, 161147, 483441, 989903, 2969709, 6929321, 20787963]

約数ペア:

[(1, 20787963), (3, 6929321), (7, 2969709), (21, 989903), (43, 483441), (129, 161147), (301, 69063), (903, 23021)]