17998981

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17981}}^1$

素因数の和:18012

約数の個数: 16

約数和(自身を含む): 24167808

約数和(自身を除く): 6168827

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 17981, 125867, 197791, 233753, 1384537, 1636271, 2571283, 17998981]

約数ペア:

[(1, 17998981), (7, 2571283), (11, 1636271), (13, 1384537), (77, 233753), (91, 197791), (143, 125867), (1001, 17981)]