15780531

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:267

約数の個数: 32

約数和(自身を含む): 23708160

約数和(自身を除く): 7927629

約数列:

[1, 3, 13, 39, 41, 71, 123, 139, 213, 417, 533, 923, 1599, 1807, 2769, 2911, 5421, 5699, 8733, 9869, 17097, 29607, 37843, 74087, 113529, 128297, 222261, 384891, 404629, 1213887, 5260177, 15780531]

約数ペア:

[(1, 15780531), (3, 5260177), (13, 1213887), (39, 404629), (41, 384891), (71, 222261), (123, 128297), (139, 113529), (213, 74087), (417, 37843), (533, 29607), (923, 17097), (1599, 9869), (1807, 8733), (2769, 5699), (2911, 5421)]