18804989

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{241}}^1$

素因数の和:476

約数の個数: 16

約数和(自身を含む): 22023936

約数和(自身を除く): 3218947

約数列:

[1, 7, 71, 157, 241, 497, 1099, 1687, 11147, 17111, 37837, 78029, 119777, 264859, 2686427, 18804989]

約数ペア:

[(1, 18804989), (7, 2686427), (71, 264859), (157, 119777), (241, 78029), (497, 37837), (1099, 17111), (1687, 11147)]