161981391

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{769}}^1$

素因数の和:1287

約数の個数: 32

約数和(自身を含む): 254580480

約数和(自身を除く): 92599089

約数列:

[1, 3, 11, 13, 33, 39, 143, 429, 491, 769, 1473, 2307, 5401, 6383, 8459, 9997, 16203, 19149, 25377, 29991, 70213, 109967, 210639, 329901, 377579, 1132737, 4153369, 4908527, 12460107, 14725581, 53993797, 161981391]

約数ペア:

[(1, 161981391), (3, 53993797), (11, 14725581), (13, 12460107), (33, 4908527), (39, 4153369), (143, 1132737), (429, 377579), (491, 329901), (769, 210639), (1473, 109967), (2307, 70213), (5401, 29991), (6383, 25377), (8459, 19149), (9997, 16203)]