405667821

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{709}}^1\times {\mathrm{863}}^1$

素因数の和:1605

約数の個数: 32

約数和(自身を含む): 618347520

約数和(自身を除く): 212679699

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 709, 863, 2127, 2589, 9217, 11219, 12053, 14671, 27651, 33657, 36159, 44013, 156689, 190723, 470067, 572169, 611867, 1835601, 7954271, 10401739, 23862813, 31205217, 135222607, 405667821]

約数ペア:

[(1, 405667821), (3, 135222607), (13, 31205217), (17, 23862813), (39, 10401739), (51, 7954271), (221, 1835601), (663, 611867), (709, 572169), (863, 470067), (2127, 190723), (2589, 156689), (9217, 44013), (11219, 36159), (12053, 33657), (14671, 27651)]