18401978

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{57149}}^1$

素因数の和:57181

約数の個数: 16

約数和(自身を含む): 32918400

約数和(自身を除く): 14516422

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 57149, 114298, 400043, 800086, 1314427, 2628854, 9200989, 18401978]

約数ペア:

[(1, 18401978), (2, 9200989), (7, 2628854), (14, 1314427), (23, 800086), (46, 400043), (161, 114298), (322, 57149)]