20742281

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{1879}}^1$

素因数の和:1988

約数の個数: 16

約数和(自身を含む): 25267200

約数和(自身を除く): 4524919

約数列:

[1, 7, 19, 83, 133, 581, 1577, 1879, 11039, 13153, 35701, 155957, 249907, 1091699, 2963183, 20742281]

約数ペア:

[(1, 20742281), (7, 2963183), (19, 1091699), (83, 249907), (133, 155957), (581, 35701), (1577, 13153), (1879, 11039)]