20782215

素因数分解:

$3^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3371}}^1$

素因数の和:3519

約数の個数: 24

約数和(自身を含む): 36296208

約数和(自身を除く): 15513993

約数列:

[1, 3, 5, 9, 15, 45, 137, 411, 685, 1233, 2055, 3371, 6165, 10113, 16855, 30339, 50565, 151695, 461827, 1385481, 2309135, 4156443, 6927405, 20782215]

約数ペア:

[(1, 20782215), (3, 6927405), (5, 4156443), (9, 2309135), (15, 1385481), (45, 461827), (137, 151695), (411, 50565), (685, 30339), (1233, 16855), (2055, 10113), (3371, 6165)]