21346965

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12821}}^1$

素因数の和:12869

約数の個数: 24

約数和(自身を含む): 38004408

約数和(自身を除く): 16657443

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12821, 38463, 64105, 115389, 192315, 474377, 576945, 1423131, 2371885, 4269393, 7115655, 21346965]

約数ペア:

[(1, 21346965), (3, 7115655), (5, 4269393), (9, 2371885), (15, 1423131), (37, 576945), (45, 474377), (111, 192315), (185, 115389), (333, 64105), (555, 38463), (1665, 12821)]