18216219

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{20173}}^1$

素因数の和:20226

約数の個数: 16

約数和(自身を含む): 28404992

約数和(自身を除く): 10188773

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 20173, 60519, 141211, 423633, 867439, 2602317, 6072073, 18216219]

約数ペア:

[(1, 18216219), (3, 6072073), (7, 2602317), (21, 867439), (43, 423633), (129, 141211), (301, 60519), (903, 20173)]