80821805

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{523}}^1\times {\mathrm{997}}^1$

素因数の和:1556

約数の個数: 16

約数和(自身を含む): 100406784

約数和(自身を除く): 19584979

約数列:

[1, 5, 31, 155, 523, 997, 2615, 4985, 16213, 30907, 81065, 154535, 521431, 2607155, 16164361, 80821805]

約数ペア:

[(1, 80821805), (5, 16164361), (31, 2607155), (155, 521431), (523, 154535), (997, 81065), (2615, 30907), (4985, 16213)]