12987820

素因数分解:

$2^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{2311}}^1$

素因数の和:2601

約数の個数: 24

約数和(自身を含む): 27383328

約数和(自身を除く): 14395508

約数列:

[1, 2, 4, 5, 10, 20, 281, 562, 1124, 1405, 2311, 2810, 4622, 5620, 9244, 11555, 23110, 46220, 649391, 1298782, 2597564, 3246955, 6493910, 12987820]

約数ペア:

[(1, 12987820), (2, 6493910), (4, 3246955), (5, 2597564), (10, 1298782), (20, 649391), (281, 46220), (562, 23110), (1124, 11555), (1405, 9244), (2311, 5620), (2810, 4622)]