19937517

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{3209}}^1$

素因数の和:3340

約数の個数: 16

約数和(自身を含む): 28248000

約数和(自身を除く): 8310483

約数列:

[1, 3, 19, 57, 109, 327, 2071, 3209, 6213, 9627, 60971, 182913, 349781, 1049343, 6645839, 19937517]

約数ペア:

[(1, 19937517), (3, 6645839), (19, 1049343), (57, 349781), (109, 182913), (327, 60971), (2071, 9627), (3209, 6213)]