21052911

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{983}}^1$

素因数の和:1067

約数の個数: 24

約数和(自身を含む): 31409280

約数和(自身を除く): 10356369

約数列:

[1, 3, 11, 33, 59, 121, 177, 363, 649, 983, 1947, 2949, 7139, 10813, 21417, 32439, 57997, 118943, 173991, 356829, 637967, 1913901, 7017637, 21052911]

約数ペア:

[(1, 21052911), (3, 7017637), (11, 1913901), (33, 637967), (59, 356829), (121, 173991), (177, 118943), (363, 57997), (649, 32439), (983, 21417), (1947, 10813), (2949, 7139)]