20386639

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{907}}^1$

素因数の和:959

約数の個数: 24

約数和(自身を含む): 26586240

約数和(自身を除く): 6199601

約数列:

[1, 7, 13, 19, 91, 133, 169, 247, 907, 1183, 1729, 3211, 6349, 11791, 17233, 22477, 82537, 120631, 153283, 224029, 1072981, 1568203, 2912377, 20386639]

約数ペア:

[(1, 20386639), (7, 2912377), (13, 1568203), (19, 1072981), (91, 224029), (133, 153283), (169, 120631), (247, 82537), (907, 22477), (1183, 17233), (1729, 11791), (3211, 6349)]