18909878

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{11923}}^1$

素因数の和:11999

約数の個数: 16

約数和(自身を含む): 31050096

約数和(自身を除く): 12140218

約数列:

[1, 2, 13, 26, 61, 122, 793, 1586, 11923, 23846, 154999, 309998, 727303, 1454606, 9454939, 18909878]

約数ペア:

[(1, 18909878), (2, 9454939), (13, 1454606), (26, 727303), (61, 309998), (122, 154999), (793, 23846), (1586, 11923)]