19854653

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{439}}^1$

素因数の和:537

約数の個数: 24

約数和(自身を含む): 25280640

約数和(自身を除く): 5425987

約数列:

[1, 7, 13, 49, 71, 91, 439, 497, 637, 923, 3073, 3479, 5707, 6461, 21511, 31169, 39949, 45227, 218183, 279643, 405197, 1527281, 2836379, 19854653]

約数ペア:

[(1, 19854653), (7, 2836379), (13, 1527281), (49, 405197), (71, 279643), (91, 218183), (439, 45227), (497, 39949), (637, 31169), (923, 21511), (3073, 6461), (3479, 5707)]