208335215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{643}}^1$

素因数の和:839

約数の個数: 32

約数和(自身を含む): 281546496

約数和(自身を除く): 73211281

約数列:

[1, 5, 11, 43, 55, 137, 215, 473, 643, 685, 1507, 2365, 3215, 5891, 7073, 7535, 27649, 29455, 35365, 64801, 88091, 138245, 304139, 324005, 440455, 969001, 1520695, 3787913, 4845005, 18939565, 41667043, 208335215]

約数ペア:

[(1, 208335215), (5, 41667043), (11, 18939565), (43, 4845005), (55, 3787913), (137, 1520695), (215, 969001), (473, 440455), (643, 324005), (685, 304139), (1507, 138245), (2365, 88091), (3215, 64801), (5891, 35365), (7073, 29455), (7535, 27649)]