18180357

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{293}}^1$

素因数の和:389

約数の個数: 32

約数和(自身を含む): 27527808

約数和(自身を除く): 9347451

約数列:

[1, 3, 13, 37, 39, 43, 111, 129, 293, 481, 559, 879, 1443, 1591, 1677, 3809, 4773, 10841, 11427, 12599, 20683, 32523, 37797, 62049, 140933, 163787, 422799, 466163, 491361, 1398489, 6060119, 18180357]

約数ペア:

[(1, 18180357), (3, 6060119), (13, 1398489), (37, 491361), (39, 466163), (43, 422799), (111, 163787), (129, 140933), (293, 62049), (481, 37797), (559, 32523), (879, 20683), (1443, 12599), (1591, 11427), (1677, 10841), (3809, 4773)]