18998138

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{21737}}^1$

素因数の和:21781

約数の個数: 16

約数和(自身を含む): 31302720

約数和(自身を除く): 12304582

約数列:

[1, 2, 19, 23, 38, 46, 437, 874, 21737, 43474, 413003, 499951, 826006, 999902, 9499069, 18998138]

約数ペア:

[(1, 18998138), (2, 9499069), (19, 999902), (23, 826006), (38, 499951), (46, 413003), (437, 43474), (874, 21737)]