21401601

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:277

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 10531839

約数列:

[1, 3, 13, 39, 59, 71, 131, 177, 213, 393, 767, 923, 1703, 2301, 2769, 4189, 5109, 7729, 9301, 12567, 23187, 27903, 54457, 100477, 120913, 163371, 301431, 362739, 548759, 1646277, 7133867, 21401601]

約数ペア:

[(1, 21401601), (3, 7133867), (13, 1646277), (39, 548759), (59, 362739), (71, 301431), (131, 163371), (177, 120913), (213, 100477), (393, 54457), (767, 27903), (923, 23187), (1703, 12567), (2301, 9301), (2769, 7729), (4189, 5109)]