18797191

素因数分解:

$7^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:199

約数の個数: 24

約数和(自身を含む): 23189504

約数和(自身を除く): 4392313

約数列:

[1, 7, 29, 31, 103, 203, 217, 721, 841, 899, 2987, 3193, 5887, 6293, 20909, 22351, 26071, 86623, 92597, 182497, 606361, 648179, 2685313, 18797191]

約数ペア:

[(1, 18797191), (7, 2685313), (29, 648179), (31, 606361), (103, 182497), (203, 92597), (217, 86623), (721, 26071), (841, 22351), (899, 20909), (2987, 6293), (3193, 5887)]