19877018

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{19997}}^1$

素因数の和:20077

約数の個数: 16

約数和(自身を含む): 34556544

約数和(自身を除く): 14679526

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 19997, 39994, 139979, 279958, 1419787, 2839574, 9938509, 19877018]

約数ペア:

[(1, 19877018), (2, 9938509), (7, 2839574), (14, 1419787), (71, 279958), (142, 139979), (497, 39994), (994, 19997)]