687792016

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{309259}}^1$

素因数の和:309406

約数の個数: 20

約数和(自身を含む): 1342188400

約数和(自身を除く): 654396384

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 309259, 618518, 1237036, 2474072, 4948144, 42987001, 85974002, 171948004, 343896008, 687792016]

約数ペア:

[(1, 687792016), (2, 343896008), (4, 171948004), (8, 85974002), (16, 42987001), (139, 4948144), (278, 2474072), (556, 1237036), (1112, 618518), (2224, 309259)]