18866991

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 31622400

約数和(自身を除く): 12755409

約数列:

[1, 3, 11, 13, 17, 33, 39, 51, 143, 169, 187, 199, 221, 429, 507, 561, 597, 663, 1859, 2189, 2431, 2587, 2873, 3383, 5577, 6567, 7293, 7761, 8619, 10149, 28457, 31603, 33631, 37213, 43979, 85371, 94809, 100893, 111639, 131937, 369941, 483769, 571727, 1109823, 1451307, 1715181, 6288997, 18866991]

約数ペア:

[(1, 18866991), (3, 6288997), (11, 1715181), (13, 1451307), (17, 1109823), (33, 571727), (39, 483769), (51, 369941), (143, 131937), (169, 111639), (187, 100893), (199, 94809), (221, 85371), (429, 43979), (507, 37213), (561, 33631), (597, 31603), (663, 28457), (1859, 10149), (2189, 8619), (2431, 7761), (2587, 7293), (2873, 6567), (3383, 5577)]