20761559

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{337}}^1\times {\mathrm{677}}^1$

素因数の和:1034

約数の個数: 16

約数和(自身を含む): 25666368

約数和(自身を除く): 4904809

約数列:

[1, 7, 13, 91, 337, 677, 2359, 4381, 4739, 8801, 30667, 61607, 228149, 1597043, 2965937, 20761559]

約数ペア:

[(1, 20761559), (7, 2965937), (13, 1597043), (91, 228149), (337, 61607), (677, 30667), (2359, 8801), (4381, 4739)]