208278315

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{661201}}^1$

素因数の和:661219

約数の個数: 24

約数和(自身を含む): 412590048

約数和(自身を除く): 204311733

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 661201, 1983603, 3306005, 4628407, 5950809, 9918015, 13885221, 23142035, 29754045, 41655663, 69426105, 208278315]

約数ペア:

[(1, 208278315), (3, 69426105), (5, 41655663), (7, 29754045), (9, 23142035), (15, 13885221), (21, 9918015), (35, 5950809), (45, 4628407), (63, 3306005), (105, 1983603), (315, 661201)]