79990001

素因数分解:

$7^3\times {\mathrm{13}}^1\times {\mathrm{17939}}^1$

素因数の和:17973

約数の個数: 16

約数和(自身を含む): 100464000

約数和(自身を除く): 20473999

約数列:

[1, 7, 13, 49, 91, 343, 637, 4459, 17939, 125573, 233207, 879011, 1632449, 6153077, 11427143, 79990001]

約数ペア:

[(1, 79990001), (7, 11427143), (13, 6153077), (49, 1632449), (91, 879011), (343, 233207), (637, 125573), (4459, 17939)]