28256571

素因数分解:

$3^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{1153}}^1$

素因数の和:1555

約数の個数: 24

約数和(自身を含む): 46806240

約数和(自身を除く): 18549669

約数列:

[1, 3, 7, 9, 21, 63, 389, 1153, 1167, 2723, 3459, 3501, 8071, 8169, 10377, 24213, 24507, 72639, 448517, 1345551, 3139619, 4036653, 9418857, 28256571]

約数ペア:

[(1, 28256571), (3, 9418857), (7, 4036653), (9, 3139619), (21, 1345551), (63, 448517), (389, 72639), (1153, 24507), (1167, 24213), (2723, 10377), (3459, 8169), (3501, 8071)]