259903007

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{408011}}^1$

素因数の和:408038

約数の個数: 12

約数和(自身を含む): 325593576

約数和(自身を除く): 65690569

約数列:

[1, 7, 13, 49, 91, 637, 408011, 2856077, 5304143, 19992539, 37129001, 259903007]

約数ペア:

[(1, 259903007), (7, 37129001), (13, 19992539), (49, 5304143), (91, 2856077), (637, 408011)]