19985245

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{733}}^1$

素因数の和:805

約数の個数: 32

約数和(自身を含む): 29594880

約数和(自身を除く): 9609635

約数列:

[1, 5, 7, 19, 35, 41, 95, 133, 205, 287, 665, 733, 779, 1435, 3665, 3895, 5131, 5453, 13927, 25655, 27265, 30053, 69635, 97489, 150265, 210371, 487445, 571007, 1051855, 2855035, 3997049, 19985245]

約数ペア:

[(1, 19985245), (5, 3997049), (7, 2855035), (19, 1051855), (35, 571007), (41, 487445), (95, 210371), (133, 150265), (205, 97489), (287, 69635), (665, 30053), (733, 27265), (779, 25655), (1435, 13927), (3665, 5453), (3895, 5131)]