20245905

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10463}}^1$

素因数の和:10517

約数の個数: 24

約数和(自身を含む): 35912448

約数和(自身を除く): 15666543

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 10463, 31389, 52315, 94167, 156945, 449909, 470835, 1349727, 2249545, 4049181, 6748635, 20245905]

約数ペア:

[(1, 20245905), (3, 6748635), (5, 4049181), (9, 2249545), (15, 1349727), (43, 470835), (45, 449909), (129, 156945), (215, 94167), (387, 52315), (645, 31389), (1935, 10463)]