21405564

素因数分解:

$2^2\times 3^2\times {\mathrm{107}}^1\times {\mathrm{5557}}^1$

素因数の和:5674

約数の個数: 36

約数和(自身を含む): 54624024

約数和(自身を除く): 33218460

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 107, 214, 321, 428, 642, 963, 1284, 1926, 3852, 5557, 11114, 16671, 22228, 33342, 50013, 66684, 100026, 200052, 594599, 1189198, 1783797, 2378396, 3567594, 5351391, 7135188, 10702782, 21405564]

約数ペア:

[(1, 21405564), (2, 10702782), (3, 7135188), (4, 5351391), (6, 3567594), (9, 2378396), (12, 1783797), (18, 1189198), (36, 594599), (107, 200052), (214, 100026), (321, 66684), (428, 50013), (642, 33342), (963, 22228), (1284, 16671), (1926, 11114), (3852, 5557)]