20665936

素因数分解:

$2^4\times {\mathrm{401}}^1\times {\mathrm{3221}}^1$

素因数の和:3630

約数の個数: 20

約数和(自身を含む): 40152564

約数和(自身を除く): 19486628

約数列:

[1, 2, 4, 8, 16, 401, 802, 1604, 3208, 3221, 6416, 6442, 12884, 25768, 51536, 1291621, 2583242, 5166484, 10332968, 20665936]

約数ペア:

[(1, 20665936), (2, 10332968), (4, 5166484), (8, 2583242), (16, 1291621), (401, 51536), (802, 25768), (1604, 12884), (3208, 6442), (3221, 6416)]