19903191

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{86161}}^1$

素因数の和:86182

約数の個数: 16

約数和(自身を含む): 33086208

約数和(自身を除く): 13183017

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 86161, 258483, 603127, 947771, 1809381, 2843313, 6634397, 19903191]

約数ペア:

[(1, 19903191), (3, 6634397), (7, 2843313), (11, 1809381), (21, 947771), (33, 603127), (77, 258483), (231, 86161)]