20892531

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:363

約数の個数: 32

約数和(自身を含む): 31781376

約数和(自身を除く): 10888845

約数列:

[1, 3, 11, 33, 37, 71, 111, 213, 241, 407, 723, 781, 1221, 2343, 2627, 2651, 7881, 7953, 8917, 17111, 26751, 28897, 51333, 86691, 98087, 188221, 294261, 564663, 633107, 1899321, 6964177, 20892531]

約数ペア:

[(1, 20892531), (3, 6964177), (11, 1899321), (33, 633107), (37, 564663), (71, 294261), (111, 188221), (213, 98087), (241, 86691), (407, 51333), (723, 28897), (781, 26751), (1221, 17111), (2343, 8917), (2627, 7953), (2651, 7881)]