980155

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:338

約数の個数: 16

約数和(自身を含む): 1306368

約数和(自身を除く): 326213

約数列:

[1, 5, 11, 55, 71, 251, 355, 781, 1255, 2761, 3905, 13805, 17821, 89105, 196031, 980155]

約数ペア:

[(1, 980155), (5, 196031), (11, 89105), (55, 17821), (71, 13805), (251, 3905), (355, 2761), (781, 1255)]