2638999

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:222

約数の個数: 16

約数和(自身を含む): 3041280

約数和(自身を除く): 402281

約数列:

[1, 11, 31, 71, 109, 341, 781, 1199, 2201, 3379, 7739, 24211, 37169, 85129, 239909, 2638999]

約数ペア:

[(1, 2638999), (11, 239909), (31, 85129), (71, 37169), (109, 24211), (341, 7739), (781, 3379), (1199, 2201)]