128204629

素因数分解:

$7^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{857}}^1$

素因数の和:985

約数の個数: 24

約数和(自身を含む): 154934208

約数和(自身を除く): 26729579

約数列:

[1, 7, 43, 49, 71, 301, 497, 857, 2107, 3053, 3479, 5999, 21371, 36851, 41993, 60847, 149597, 257957, 425929, 1805699, 2616421, 2981503, 18314947, 128204629]

約数ペア:

[(1, 128204629), (7, 18314947), (43, 2981503), (49, 2616421), (71, 1805699), (301, 425929), (497, 257957), (857, 149597), (2107, 60847), (3053, 41993), (3479, 36851), (5999, 21371)]