21000251987

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{20479}}^1$

素因数の和:20675

約数の個数: 32

約数和(自身を含む): 25268060160

約数和(自身を除く): 4267808173

約数列:

[1, 11, 13, 71, 101, 143, 781, 923, 1111, 1313, 7171, 10153, 14443, 20479, 78881, 93223, 225269, 266227, 1025453, 1454009, 2068379, 2928497, 15994099, 18902117, 22752169, 26888927, 146854909, 207923287, 295778197, 1615403999, 1909113817, 21000251987]

約数ペア:

[(1, 21000251987), (11, 1909113817), (13, 1615403999), (71, 295778197), (101, 207923287), (143, 146854909), (781, 26888927), (923, 22752169), (1111, 18902117), (1313, 15994099), (7171, 2928497), (10153, 2068379), (14443, 1454009), (20479, 1025453), (78881, 266227), (93223, 225269)]