20915258

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{16417}}^1$

素因数の和:16446

約数の個数: 24

約数和(自身を含む): 39304692

約数和(自身を除く): 18389434

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 637, 1274, 16417, 32834, 114919, 213421, 229838, 426842, 804433, 1493947, 1608866, 2987894, 10457629, 20915258]

約数ペア:

[(1, 20915258), (2, 10457629), (7, 2987894), (13, 1608866), (14, 1493947), (26, 804433), (49, 426842), (91, 229838), (98, 213421), (182, 114919), (637, 32834), (1274, 16417)]