18197915

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{223}}^1\times {\mathrm{859}}^1$

素因数の和:1106

約数の個数: 16

約数和(自身を含む): 23116800

約数和(自身を除く): 4918885

約数列:

[1, 5, 19, 95, 223, 859, 1115, 4237, 4295, 16321, 21185, 81605, 191557, 957785, 3639583, 18197915]

約数ペア:

[(1, 18197915), (5, 3639583), (19, 957785), (95, 191557), (223, 81605), (859, 21185), (1115, 16321), (4237, 4295)]