28556905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{1217}}^1$

素因数の和:1273

約数の個数: 24

約数和(自身を含む): 38980872

約数和(自身を除く): 10423967

約数列:

[1, 5, 13, 19, 65, 95, 247, 361, 1217, 1235, 1805, 4693, 6085, 15821, 23123, 23465, 79105, 115615, 300599, 439337, 1502995, 2196685, 5711381, 28556905]

約数ペア:

[(1, 28556905), (5, 5711381), (13, 2196685), (19, 1502995), (65, 439337), (95, 300599), (247, 115615), (361, 79105), (1217, 23465), (1235, 23123), (1805, 15821), (4693, 6085)]