28213790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{256489}}^1$

素因数の和:256507

約数の個数: 16

約数和(自身を含む): 55401840

約数和(自身を除く): 27188050

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 256489, 512978, 1282445, 2564890, 2821379, 5642758, 14106895, 28213790]

約数ペア:

[(1, 28213790), (2, 14106895), (5, 5642758), (10, 2821379), (11, 2564890), (22, 1282445), (55, 512978), (110, 256489)]