19999485

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3673}}^1$

素因数の和:3706

約数の個数: 36

約数和(自身を含む): 38114076

約数和(自身を除く): 18114591

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 363, 495, 605, 1089, 1815, 3673, 5445, 11019, 18365, 33057, 40403, 55095, 121209, 165285, 202015, 363627, 444433, 606045, 1333299, 1818135, 2222165, 3999897, 6666495, 19999485]

約数ペア:

[(1, 19999485), (3, 6666495), (5, 3999897), (9, 2222165), (11, 1818135), (15, 1333299), (33, 606045), (45, 444433), (55, 363627), (99, 202015), (121, 165285), (165, 121209), (363, 55095), (495, 40403), (605, 33057), (1089, 18365), (1815, 11019), (3673, 5445)]