18895869

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{9857}}^1$

素因数の和:9937

約数の個数: 16

約数和(自身を含む): 28391040

約数和(自身を除く): 9495171

約数列:

[1, 3, 9, 27, 71, 213, 639, 1917, 9857, 29571, 88713, 266139, 699847, 2099541, 6298623, 18895869]

約数ペア:

[(1, 18895869), (3, 6298623), (9, 2099541), (27, 699847), (71, 266139), (213, 88713), (639, 29571), (1917, 9857)]