19478613

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:154

約数の個数: 64

約数和(自身を含む): 34670592

約数和(自身を除く): 15191979

約数列:

[1, 3, 7, 11, 21, 33, 37, 43, 53, 77, 111, 129, 159, 231, 259, 301, 371, 407, 473, 583, 777, 903, 1113, 1221, 1419, 1591, 1749, 1961, 2279, 2849, 3311, 4081, 4773, 5883, 6837, 8547, 9933, 11137, 12243, 13727, 15953, 17501, 21571, 25069, 33411, 41181, 47859, 52503, 64713, 75207, 84323, 122507, 150997, 175483, 252969, 367521, 452991, 526449, 590261, 927553, 1770783, 2782659, 6492871, 19478613]

約数ペア:

[(1, 19478613), (3, 6492871), (7, 2782659), (11, 1770783), (21, 927553), (33, 590261), (37, 526449), (43, 452991), (53, 367521), (77, 252969), (111, 175483), (129, 150997), (159, 122507), (231, 84323), (259, 75207), (301, 64713), (371, 52503), (407, 47859), (473, 41181), (583, 33411), (777, 25069), (903, 21571), (1113, 17501), (1221, 15953), (1419, 13727), (1591, 12243), (1749, 11137), (1961, 9933), (2279, 8547), (2849, 6837), (3311, 5883), (4081, 4773)]