20891016

素因数分解:

$2^3\times 3^2\times {\mathrm{257}}^1\times {\mathrm{1129}}^1$

素因数の和:1398

約数の個数: 48

約数和(自身を含む): 56850300

約数和(自身を除く): 35959284

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 257, 514, 771, 1028, 1129, 1542, 2056, 2258, 2313, 3084, 3387, 4516, 4626, 6168, 6774, 9032, 9252, 10161, 13548, 18504, 20322, 27096, 40644, 81288, 290153, 580306, 870459, 1160612, 1740918, 2321224, 2611377, 3481836, 5222754, 6963672, 10445508, 20891016]

約数ペア:

[(1, 20891016), (2, 10445508), (3, 6963672), (4, 5222754), (6, 3481836), (8, 2611377), (9, 2321224), (12, 1740918), (18, 1160612), (24, 870459), (36, 580306), (72, 290153), (257, 81288), (514, 40644), (771, 27096), (1028, 20322), (1129, 18504), (1542, 13548), (2056, 10161), (2258, 9252), (2313, 9032), (3084, 6774), (3387, 6168), (4516, 4626)]