19915503

素因数分解:

$3^1\times {\mathrm{139}}^1\times {\mathrm{163}}^1\times {\mathrm{293}}^1$

素因数の和:598

約数の個数: 16

約数和(自身を含む): 27000960

約数和(自身を除く): 7085457

約数列:

[1, 3, 139, 163, 293, 417, 489, 879, 22657, 40727, 47759, 67971, 122181, 143277, 6638501, 19915503]

約数ペア:

[(1, 19915503), (3, 6638501), (139, 143277), (163, 122181), (293, 67971), (417, 47759), (489, 40727), (879, 22657)]