28358181

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{4931}}^1$

素因数の和:5014

約数の個数: 20

約数和(自身を含む): 42967584

約数和(自身を除く): 14609403

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 4931, 5751, 14793, 44379, 133137, 350101, 399411, 1050303, 3150909, 9452727, 28358181]

約数ペア:

[(1, 28358181), (3, 9452727), (9, 3150909), (27, 1050303), (71, 399411), (81, 350101), (213, 133137), (639, 44379), (1917, 14793), (4931, 5751)]