28412721

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{277}}^1$

素因数の和:446

約数の個数: 32

約数和(自身を含む): 44035200

約数和(自身を除く): 15622479

約数列:

[1, 3, 9, 27, 29, 87, 131, 261, 277, 393, 783, 831, 1179, 2493, 3537, 3799, 7479, 8033, 11397, 24099, 34191, 36287, 72297, 102573, 108861, 216891, 326583, 979749, 1052323, 3156969, 9470907, 28412721]

約数ペア:

[(1, 28412721), (3, 9470907), (9, 3156969), (27, 1052323), (29, 979749), (87, 326583), (131, 216891), (261, 108861), (277, 102573), (393, 72297), (783, 36287), (831, 34191), (1179, 24099), (2493, 11397), (3537, 8033), (3799, 7479)]