19903887

素因数分解:

$3^7\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 31488000

約数和(自身を除く): 11584113

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 479, 513, 729, 1437, 1539, 2187, 4311, 4617, 9101, 12933, 13851, 27303, 38799, 41553, 81909, 116397, 245727, 349191, 737181, 1047573, 2211543, 6634629, 19903887]

約数ペア:

[(1, 19903887), (3, 6634629), (9, 2211543), (19, 1047573), (27, 737181), (57, 349191), (81, 245727), (171, 116397), (243, 81909), (479, 41553), (513, 38799), (729, 27303), (1437, 13851), (1539, 12933), (2187, 9101), (4311, 4617)]