28656381

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 42577920

約数和(自身を除く): 13921539

約数列:

[1, 3, 13, 39, 71, 79, 131, 213, 237, 393, 923, 1027, 1703, 2769, 3081, 5109, 5609, 9301, 10349, 16827, 27903, 31047, 72917, 120913, 134537, 218751, 362739, 403611, 734779, 2204337, 9552127, 28656381]

約数ペア:

[(1, 28656381), (3, 9552127), (13, 2204337), (39, 734779), (71, 403611), (79, 362739), (131, 218751), (213, 134537), (237, 120913), (393, 72917), (923, 31047), (1027, 27903), (1703, 16827), (2769, 10349), (3081, 9301), (5109, 5609)]