16128220

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2011}}^1$

素因数の和:2421

約数の個数: 24

約数和(自身を含む): 33970608

約数和(自身を除く): 17842388

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 2011, 4010, 4022, 8020, 8044, 10055, 20110, 40220, 806411, 1612822, 3225644, 4032055, 8064110, 16128220]

約数ペア:

[(1, 16128220), (2, 8064110), (4, 4032055), (5, 3225644), (10, 1612822), (20, 806411), (401, 40220), (802, 20110), (1604, 10055), (2005, 8044), (2011, 8020), (4010, 4022)]