18678897

素因数分解:

$3^3\times {\mathrm{131}}^1\times {\mathrm{5281}}^1$

素因数の和:5421

約数の個数: 16

約数和(自身を含む): 27888960

約数和(自身を除く): 9210063

約数列:

[1, 3, 9, 27, 131, 393, 1179, 3537, 5281, 15843, 47529, 142587, 691811, 2075433, 6226299, 18678897]

約数ペア:

[(1, 18678897), (3, 6226299), (9, 2075433), (27, 691811), (131, 142587), (393, 47529), (1179, 15843), (3537, 5281)]