128455789

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{87803}}^1$

素因数の和:87840

約数の個数: 16

約数和(自身を含む): 168583680

約数和(自身を除く): 40127891

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 87803, 614621, 965833, 1668257, 6760831, 11677799, 18350827, 128455789]

約数ペア:

[(1, 128455789), (7, 18350827), (11, 11677799), (19, 6760831), (77, 1668257), (133, 965833), (209, 614621), (1463, 87803)]