21550509

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1619}}^1$

素因数の和:1674

約数の個数: 32

約数和(自身を含む): 34992000

約数和(自身を除く): 13441491

約数列:

[1, 3, 9, 17, 27, 29, 51, 87, 153, 261, 459, 493, 783, 1479, 1619, 4437, 4857, 13311, 14571, 27523, 43713, 46951, 82569, 140853, 247707, 422559, 743121, 798167, 1267677, 2394501, 7183503, 21550509]

約数ペア:

[(1, 21550509), (3, 7183503), (9, 2394501), (17, 1267677), (27, 798167), (29, 743121), (51, 422559), (87, 247707), (153, 140853), (261, 82569), (459, 46951), (493, 43713), (783, 27523), (1479, 14571), (1619, 13311), (4437, 4857)]