20893743

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4153}}^1$

素因数の和:4215

約数の個数: 24

約数和(自身を含む): 33265232

約数和(自身を除く): 12371489

約数列:

[1, 3, 9, 13, 39, 43, 117, 129, 387, 559, 1677, 4153, 5031, 12459, 37377, 53989, 161967, 178579, 485901, 535737, 1607211, 2321527, 6964581, 20893743]

約数ペア:

[(1, 20893743), (3, 6964581), (9, 2321527), (13, 1607211), (39, 535737), (43, 485901), (117, 178579), (129, 161967), (387, 53989), (559, 37377), (1677, 12459), (4153, 5031)]