261330286

素因数分解:

$2^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{134291}}^1$

素因数の和:134439

約数の個数: 16

約数和(自身を含む): 451221120

約数和(自身を除く): 189890834

約数列:

[1, 2, 7, 14, 139, 278, 973, 1946, 134291, 268582, 940037, 1880074, 18666449, 37332898, 130665143, 261330286]

約数ペア:

[(1, 261330286), (2, 130665143), (7, 37332898), (14, 18666449), (139, 1880074), (278, 940037), (973, 268582), (1946, 134291)]