2808405

素因数分解:

$3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:378

約数の個数: 32

約数和(自身を含む): 5080320

約数和(自身を除く): 2271915

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 135, 213, 293, 355, 639, 879, 1065, 1465, 1917, 2637, 3195, 4395, 7911, 9585, 13185, 20803, 39555, 62409, 104015, 187227, 312045, 561681, 936135, 2808405]

約数ペア:

[(1, 2808405), (3, 936135), (5, 561681), (9, 312045), (15, 187227), (27, 104015), (45, 62409), (71, 39555), (135, 20803), (213, 13185), (293, 9585), (355, 7911), (639, 4395), (879, 3195), (1065, 2637), (1465, 1917)]