209071569

素因数分解:

$3^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1\times {\mathrm{521}}^1$

素因数の和:825

約数の個数: 32

約数和(自身を含む): 324124416

約数和(自身を除く): 115052847

約数列:

[1, 3, 7, 21, 97, 197, 291, 521, 591, 679, 1379, 1563, 2037, 3647, 4137, 10941, 19109, 50537, 57327, 102637, 133763, 151611, 307911, 353759, 401289, 718459, 1061277, 2155377, 9955789, 29867367, 69690523, 209071569]

約数ペア:

[(1, 209071569), (3, 69690523), (7, 29867367), (21, 9955789), (97, 2155377), (197, 1061277), (291, 718459), (521, 401289), (591, 353759), (679, 307911), (1379, 151611), (1563, 133763), (2037, 102637), (3647, 57327), (4137, 50537), (10941, 19109)]