21288136

素因数分解:

$2^3\times {\mathrm{109}}^1\times {\mathrm{24413}}^1$

素因数の和:24528

約数の個数: 16

約数和(自身を含む): 40283100

約数和(自身を除く): 18994964

約数列:

[1, 2, 4, 8, 109, 218, 436, 872, 24413, 48826, 97652, 195304, 2661017, 5322034, 10644068, 21288136]

約数ペア:

[(1, 21288136), (2, 10644068), (4, 5322034), (8, 2661017), (109, 195304), (218, 97652), (436, 48826), (872, 24413)]