199777798

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{89909}}^1$

素因数の和:90023

約数の個数: 16

約数和(自身を含む): 330149520

約数和(自身を除く): 130371722

約数列:

[1, 2, 11, 22, 101, 202, 1111, 2222, 89909, 179818, 988999, 1977998, 9080809, 18161618, 99888899, 199777798]

約数ペア:

[(1, 199777798), (2, 99888899), (11, 18161618), (22, 9080809), (101, 1977998), (202, 988999), (1111, 179818), (2222, 89909)]