21442887

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{13933}}^1$

素因数の和:13964

約数の個数: 20

約数和(自身を含む): 33720280

約数和(自身を除く): 12277393

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 13933, 41799, 125397, 264727, 376191, 794181, 1128573, 2382543, 7147629, 21442887]

約数ペア:

[(1, 21442887), (3, 7147629), (9, 2382543), (19, 1128573), (27, 794181), (57, 376191), (81, 264727), (171, 125397), (513, 41799), (1539, 13933)]