78711381

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{17597}}^1$

素因数の和:17681

約数の個数: 24

約数和(自身を含む): 131773824

約数和(自身を除く): 53062443

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 17597, 52791, 123179, 158373, 369537, 1108611, 1249387, 3748161, 8745709, 11244483, 26237127, 78711381]

約数ペア:

[(1, 78711381), (3, 26237127), (7, 11244483), (9, 8745709), (21, 3748161), (63, 1249387), (71, 1108611), (213, 369537), (497, 158373), (639, 123179), (1491, 52791), (4473, 17597)]