20519824

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2099}}^1$

素因数の和:2167

約数の個数: 40

約数和(自身を含む): 43747200

約数和(自身を除く): 23227376

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 188, 208, 376, 611, 752, 1222, 2099, 2444, 4198, 4888, 8396, 9776, 16792, 27287, 33584, 54574, 98653, 109148, 197306, 218296, 394612, 436592, 789224, 1282489, 1578448, 2564978, 5129956, 10259912, 20519824]

約数ペア:

[(1, 20519824), (2, 10259912), (4, 5129956), (8, 2564978), (13, 1578448), (16, 1282489), (26, 789224), (47, 436592), (52, 394612), (94, 218296), (104, 197306), (188, 109148), (208, 98653), (376, 54574), (611, 33584), (752, 27287), (1222, 16792), (2099, 9776), (2444, 8396), (4198, 4888)]