18817994

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{1511}}^1$

素因数の和:2005

約数の個数: 16

約数和(自身を含む): 30481920

約数和(自身を除く): 11663926

約数列:

[1, 2, 13, 26, 479, 958, 1511, 3022, 6227, 12454, 19643, 39286, 723769, 1447538, 9408997, 18817994]

約数ペア:

[(1, 18817994), (2, 9408997), (13, 1447538), (26, 723769), (479, 39286), (958, 19643), (1511, 12454), (3022, 6227)]