21865437

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{887}}^1$

素因数の和:990

約数の個数: 32

約数和(自身を含む): 35804160

約数和(自身を除く): 13938723

約数列:

[1, 3, 9, 11, 27, 33, 83, 99, 249, 297, 747, 887, 913, 2241, 2661, 2739, 7983, 8217, 9757, 23949, 24651, 29271, 73621, 87813, 220863, 263439, 662589, 809831, 1987767, 2429493, 7288479, 21865437]

約数ペア:

[(1, 21865437), (3, 7288479), (9, 2429493), (11, 1987767), (27, 809831), (33, 662589), (83, 263439), (99, 220863), (249, 87813), (297, 73621), (747, 29271), (887, 24651), (913, 23949), (2241, 9757), (2661, 8217), (2739, 7983)]