209969405

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{10141}}^1$

素因数の和:10288

約数の個数: 16

約数和(自身を含む): 260689968

約数和(自身を除く): 50720563

約数列:

[1, 5, 41, 101, 205, 505, 4141, 10141, 20705, 50705, 415781, 1024241, 2078905, 5121205, 41993881, 209969405]

約数ペア:

[(1, 209969405), (5, 41993881), (41, 5121205), (101, 2078905), (205, 1024241), (505, 415781), (4141, 50705), (10141, 20705)]