20938581

素因数分解:

$3^5\times {\mathrm{199}}^1\times {\mathrm{433}}^1$

素因数の和:647

約数の個数: 24

約数和(自身を含む): 31595200

約数和(自身を除く): 10656619

約数列:

[1, 3, 9, 27, 81, 199, 243, 433, 597, 1299, 1791, 3897, 5373, 11691, 16119, 35073, 48357, 86167, 105219, 258501, 775503, 2326509, 6979527, 20938581]

約数ペア:

[(1, 20938581), (3, 6979527), (9, 2326509), (27, 775503), (81, 258501), (199, 105219), (243, 86167), (433, 48357), (597, 35073), (1299, 16119), (1791, 11691), (3897, 5373)]