21270939

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{911}}^1$

素因数の和:1138

約数の個数: 16

約数和(自身を含む): 29213184

約数和(自身を除く): 7942245

約数列:

[1, 3, 43, 129, 181, 543, 911, 2733, 7783, 23349, 39173, 117519, 164891, 494673, 7090313, 21270939]

約数ペア:

[(1, 21270939), (3, 7090313), (43, 494673), (129, 164891), (181, 117519), (543, 39173), (911, 23349), (2733, 7783)]