78877981

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{27961}}^1$

素因数の和:28012

約数の個数: 16

約数和(自身を含む): 100215808

約数和(自身を除く): 21337827

約数列:

[1, 7, 13, 31, 91, 217, 403, 2821, 27961, 195727, 363493, 866791, 2544451, 6067537, 11268283, 78877981]

約数ペア:

[(1, 78877981), (7, 11268283), (13, 6067537), (31, 2544451), (91, 866791), (217, 363493), (403, 195727), (2821, 27961)]