81611859

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{1493}}^1$

素因数の和:1659

約数の個数: 32

約数和(自身を含む): 131950080

約数和(自身を除く): 50338221

約数列:

[1, 3, 7, 19, 21, 57, 133, 137, 399, 411, 959, 1493, 2603, 2877, 4479, 7809, 10451, 18221, 28367, 31353, 54663, 85101, 198569, 204541, 595707, 613623, 1431787, 3886279, 4295361, 11658837, 27203953, 81611859]

約数ペア:

[(1, 81611859), (3, 27203953), (7, 11658837), (19, 4295361), (21, 3886279), (57, 1431787), (133, 613623), (137, 595707), (399, 204541), (411, 198569), (959, 85101), (1493, 54663), (2603, 31353), (2877, 28367), (4479, 18221), (7809, 10451)]