28128987

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{607}}^1$

素因数の和:903

約数の個数: 24

約数和(自身を含む): 42997760

約数和(自身を除く): 14868773

約数列:

[1, 3, 9, 19, 57, 171, 271, 607, 813, 1821, 2439, 5149, 5463, 11533, 15447, 34599, 46341, 103797, 164497, 493491, 1480473, 3125443, 9376329, 28128987]

約数ペア:

[(1, 28128987), (3, 9376329), (9, 3125443), (19, 1480473), (57, 493491), (171, 164497), (271, 103797), (607, 46341), (813, 34599), (1821, 15447), (2439, 11533), (5149, 5463)]