18684717

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{937}}^1$

素因数の和:997

約数の個数: 24

約数和(自身を含む): 27644736

約数和(自身を除く): 8960019

約数列:

[1, 3, 17, 23, 51, 69, 289, 391, 867, 937, 1173, 2811, 6647, 15929, 19941, 21551, 47787, 64653, 270793, 366367, 812379, 1099101, 6228239, 18684717]

約数ペア:

[(1, 18684717), (3, 6228239), (17, 1099101), (23, 812379), (51, 366367), (69, 270793), (289, 64653), (391, 47787), (867, 21551), (937, 19941), (1173, 15929), (2811, 6647)]