128520837

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{54713}}^1$

素因数の和:54754

約数の個数: 20

約数和(自身を含む): 198611820

約数和(自身を除く): 70090983

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 54713, 164139, 492417, 1477251, 1586677, 4431753, 4760031, 14280093, 42840279, 128520837]

約数ペア:

[(1, 128520837), (3, 42840279), (9, 14280093), (27, 4760031), (29, 4431753), (81, 1586677), (87, 1477251), (261, 492417), (783, 164139), (2349, 54713)]