211028571

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{200407}}^1$

素因数の和:200432

約数の個数: 20

約数和(自身を含む): 339491152

約数和(自身を除く): 128462581

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 200407, 601221, 1803663, 2605291, 5410989, 7815873, 16232967, 23447619, 70342857, 211028571]

約数ペア:

[(1, 211028571), (3, 70342857), (9, 23447619), (13, 16232967), (27, 7815873), (39, 5410989), (81, 2605291), (117, 1803663), (351, 601221), (1053, 200407)]