21915729

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 36801024

約数和(自身を除く): 14885295

約数列:

[1, 3, 9, 11, 31, 33, 37, 93, 99, 111, 193, 279, 333, 341, 407, 579, 1023, 1147, 1221, 1737, 2123, 3069, 3441, 3663, 5983, 6369, 7141, 10323, 12617, 17949, 19107, 21423, 37851, 53847, 64269, 65813, 78551, 113553, 197439, 221371, 235653, 592317, 664113, 706959, 1992339, 2435081, 7305243, 21915729]

約数ペア:

[(1, 21915729), (3, 7305243), (9, 2435081), (11, 1992339), (31, 706959), (33, 664113), (37, 592317), (93, 235653), (99, 221371), (111, 197439), (193, 113553), (279, 78551), (333, 65813), (341, 64269), (407, 53847), (579, 37851), (1023, 21423), (1147, 19107), (1221, 17949), (1737, 12617), (2123, 10323), (3069, 7141), (3441, 6369), (3663, 5983)]