20470288

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:475

約数の個数: 40

約数和(自身を含む): 41437080

約数和(自身を除く): 20966792

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 157, 232, 281, 314, 464, 562, 628, 1124, 1256, 2248, 2512, 4496, 4553, 8149, 9106, 16298, 18212, 32596, 36424, 44117, 65192, 72848, 88234, 130384, 176468, 352936, 705872, 1279393, 2558786, 5117572, 10235144, 20470288]

約数ペア:

[(1, 20470288), (2, 10235144), (4, 5117572), (8, 2558786), (16, 1279393), (29, 705872), (58, 352936), (116, 176468), (157, 130384), (232, 88234), (281, 72848), (314, 65192), (464, 44117), (562, 36424), (628, 32596), (1124, 18212), (1256, 16298), (2248, 9106), (2512, 8149), (4496, 4553)]