21064581

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^2$

素因数の和:182

約数の個数: 36

約数和(自身を含む): 33638436

約数和(自身を除く): 12573855

約数列:

[1, 3, 9, 17, 37, 51, 61, 111, 153, 183, 333, 549, 629, 1037, 1887, 2257, 3111, 3721, 5661, 6771, 9333, 11163, 20313, 33489, 38369, 63257, 115107, 137677, 189771, 345321, 413031, 569313, 1239093, 2340509, 7021527, 21064581]

約数ペア:

[(1, 21064581), (3, 7021527), (9, 2340509), (17, 1239093), (37, 569313), (51, 413031), (61, 345321), (111, 189771), (153, 137677), (183, 115107), (333, 63257), (549, 38369), (629, 33489), (1037, 20313), (1887, 11163), (2257, 9333), (3111, 6771), (3721, 5661)]