28405647

素因数分解:

$3^4\times {\mathrm{131}}^1\times {\mathrm{2677}}^1$

素因数の和:2820

約数の個数: 20

約数和(自身を含む): 42773016

約数和(自身を除く): 14367369

約数列:

[1, 3, 9, 27, 81, 131, 393, 1179, 2677, 3537, 8031, 10611, 24093, 72279, 216837, 350687, 1052061, 3156183, 9468549, 28405647]

約数ペア:

[(1, 28405647), (3, 9468549), (9, 3156183), (27, 1052061), (81, 350687), (131, 216837), (393, 72279), (1179, 24093), (2677, 10611), (3537, 8031)]