208540215

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{356479}}^1$

素因数の和:356503

約数の個数: 24

約数和(自身を含む): 389276160

約数和(自身を除く): 180735945

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 356479, 1069437, 1782395, 3208311, 4634227, 5347185, 13902681, 16041555, 23171135, 41708043, 69513405, 208540215]

約数ペア:

[(1, 208540215), (3, 69513405), (5, 41708043), (9, 23171135), (13, 16041555), (15, 13902681), (39, 5347185), (45, 4634227), (65, 3208311), (117, 1782395), (195, 1069437), (585, 356479)]