21038534

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^2\times {\mathrm{257}}^1$

素因数の和:392

約数の個数: 24

約数和(自身を含む): 35136504

約数和(自身を除く): 14097970

約数列:

[1, 2, 11, 22, 61, 122, 257, 514, 671, 1342, 2827, 3721, 5654, 7442, 15677, 31354, 40931, 81862, 172447, 344894, 956297, 1912594, 10519267, 21038534]

約数ペア:

[(1, 21038534), (2, 10519267), (11, 1912594), (22, 956297), (61, 344894), (122, 172447), (257, 81862), (514, 40931), (671, 31354), (1342, 15677), (2827, 7442), (3721, 5654)]