19186391

素因数分解:

$7^4\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:220

約数の個数: 20

約数和(自身を含む): 22923384

約数和(自身を除く): 3736993

約数列:

[1, 7, 49, 61, 131, 343, 427, 917, 2401, 2989, 6419, 7991, 20923, 44933, 55937, 146461, 314531, 391559, 2740913, 19186391]

約数ペア:

[(1, 19186391), (7, 2740913), (49, 391559), (61, 314531), (131, 146461), (343, 55937), (427, 44933), (917, 20923), (2401, 7991), (2989, 6419)]