21499683664

素因数分解:

$2^4\times {\mathrm{5479}}^1\times {\mathrm{245251}}^1$

素因数の和:250738

約数の個数: 20

約数和(自身を含む): 41663409760

約数和(自身を除く): 20163726096

約数列:

[1, 2, 4, 8, 16, 5479, 10958, 21916, 43832, 87664, 245251, 490502, 981004, 1962008, 3924016, 1343730229, 2687460458, 5374920916, 10749841832, 21499683664]

約数ペア:

[(1, 21499683664), (2, 10749841832), (4, 5374920916), (8, 2687460458), (16, 1343730229), (5479, 3924016), (10958, 1962008), (21916, 981004), (43832, 490502), (87664, 245251)]