19911138

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{643}}^1$

素因数の和:1058

約数の個数: 32

約数和(自身を含む): 43060416

約数和(自身を除く): 23149278

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 397, 643, 794, 1191, 1286, 1929, 2382, 3858, 5161, 8359, 10322, 15483, 16718, 25077, 30966, 50154, 255271, 510542, 765813, 1531626, 3318523, 6637046, 9955569, 19911138]

約数ペア:

[(1, 19911138), (2, 9955569), (3, 6637046), (6, 3318523), (13, 1531626), (26, 765813), (39, 510542), (78, 255271), (397, 50154), (643, 30966), (794, 25077), (1191, 16718), (1286, 15483), (1929, 10322), (2382, 8359), (3858, 5161)]