19901726

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{10781}}^1$

素因数の和:10867

約数の個数: 16

約数和(自身を含む): 32604768

約数和(自身を除く): 12703042

約数列:

[1, 2, 13, 26, 71, 142, 923, 1846, 10781, 21562, 140153, 280306, 765451, 1530902, 9950863, 19901726]

約数ペア:

[(1, 19901726), (2, 9950863), (13, 1530902), (26, 765451), (71, 280306), (142, 140153), (923, 21562), (1846, 10781)]