18646659

素因数分解:

$3^3\times {\mathrm{71}}^2\times {\mathrm{137}}^1$

素因数の和:288

約数の個数: 24

約数和(自身を含む): 28223760

約数和(自身を除く): 9577101

約数列:

[1, 3, 9, 27, 71, 137, 213, 411, 639, 1233, 1917, 3699, 5041, 9727, 15123, 29181, 45369, 87543, 136107, 262629, 690617, 2071851, 6215553, 18646659]

約数ペア:

[(1, 18646659), (3, 6215553), (9, 2071851), (27, 690617), (71, 262629), (137, 136107), (213, 87543), (411, 45369), (639, 29181), (1233, 15123), (1917, 9727), (3699, 5041)]