18929878

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{12119}}^1$

素因数の和:12203

約数の個数: 16

約数和(自身を含む): 31415040

約数和(自身を除く): 12485162

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 12119, 24238, 133309, 266618, 860449, 1720898, 9464939, 18929878]

約数ペア:

[(1, 18929878), (2, 9464939), (11, 1720898), (22, 860449), (71, 266618), (142, 133309), (781, 24238), (1562, 12119)]