11112020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{5501}}^1$

素因数の和:5611

約数の個数: 24

約数和(自身を含む): 23570568

約数和(自身を除く): 12458548

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 5501, 11002, 22004, 27505, 55010, 110020, 555601, 1111202, 2222404, 2778005, 5556010, 11112020]

約数ペア:

[(1, 11112020), (2, 5556010), (4, 2778005), (5, 2222404), (10, 1111202), (20, 555601), (101, 110020), (202, 55010), (404, 27505), (505, 22004), (1010, 11002), (2020, 5501)]