19486478

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{4451}}^1$

素因数の和:4663

約数の個数: 16

約数和(自身を含む): 32054400

約数和(自身を除く): 12567922

約数列:

[1, 2, 11, 22, 199, 398, 2189, 4378, 4451, 8902, 48961, 97922, 885749, 1771498, 9743239, 19486478]

約数ペア:

[(1, 19486478), (2, 9743239), (11, 1771498), (22, 885749), (199, 97922), (398, 48961), (2189, 8902), (4378, 4451)]