21158073

素因数分解:

$3^2\times {\mathrm{107}}^1\times {\mathrm{127}}^1\times {\mathrm{173}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 31269888

約数和(自身を除く): 10111815

約数列:

[1, 3, 9, 107, 127, 173, 321, 381, 519, 963, 1143, 1557, 13589, 18511, 21971, 40767, 55533, 65913, 122301, 166599, 197739, 2350897, 7052691, 21158073]

約数ペア:

[(1, 21158073), (3, 7052691), (9, 2350897), (107, 197739), (127, 166599), (173, 122301), (321, 65913), (381, 55533), (519, 40767), (963, 21971), (1143, 18511), (1557, 13589)]