1991059990

素因数分解:

$2^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{740171}}^1$

素因数の和:740447

約数の個数: 16

約数和(自身を含む): 3597235920

約数和(自身を除く): 1606175930

約数列:

[1, 2, 5, 10, 269, 538, 1345, 2690, 740171, 1480342, 3700855, 7401710, 199105999, 398211998, 995529995, 1991059990]

約数ペア:

[(1, 1991059990), (2, 995529995), (5, 398211998), (10, 199105999), (269, 7401710), (538, 3700855), (1345, 1480342), (2690, 740171)]