28080020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{13901}}^1$

素因数の和:14011

約数の個数: 24

約数和(自身を含む): 59556168

約数和(自身を除く): 31476148

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 13901, 27802, 55604, 69505, 139010, 278020, 1404001, 2808002, 5616004, 7020005, 14040010, 28080020]

約数ペア:

[(1, 28080020), (2, 14040010), (4, 7020005), (5, 5616004), (10, 2808002), (20, 1404001), (101, 278020), (202, 139010), (404, 69505), (505, 55604), (1010, 27802), (2020, 13901)]