21173691

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1291}}^1$

素因数の和:1383

約数の個数: 32

約数和(自身を含む): 35721216

約数和(自身を除く): 14547525

約数列:

[1, 3, 7, 11, 21, 33, 71, 77, 213, 231, 497, 781, 1291, 1491, 2343, 3873, 5467, 9037, 14201, 16401, 27111, 42603, 91661, 99407, 274983, 298221, 641627, 1008271, 1924881, 3024813, 7057897, 21173691]

約数ペア:

[(1, 21173691), (3, 7057897), (7, 3024813), (11, 1924881), (21, 1008271), (33, 641627), (71, 298221), (77, 274983), (213, 99407), (231, 91661), (497, 42603), (781, 27111), (1291, 16401), (1491, 14201), (2343, 9037), (3873, 5467)]