21078676

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{337}}^1\times {\mathrm{823}}^1$

素因数の和:1183

約数の個数: 24

約数和(自身を含む): 38991680

約数和(自身を除く): 17913004

約数列:

[1, 2, 4, 19, 38, 76, 337, 674, 823, 1348, 1646, 3292, 6403, 12806, 15637, 25612, 31274, 62548, 277351, 554702, 1109404, 5269669, 10539338, 21078676]

約数ペア:

[(1, 21078676), (2, 10539338), (4, 5269669), (19, 1109404), (38, 554702), (76, 277351), (337, 62548), (674, 31274), (823, 25612), (1348, 15637), (1646, 12806), (3292, 6403)]