208568109

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{4391}}^1$

素因数の和:4688

約数の個数: 16

約数和(自身を含む): 283336704

約数和(自身を除く): 74768595

約数列:

[1, 3, 71, 213, 223, 669, 4391, 13173, 15833, 47499, 311761, 935283, 979193, 2937579, 69522703, 208568109]

約数ペア:

[(1, 208568109), (3, 69522703), (71, 2937579), (213, 979193), (223, 935283), (669, 311761), (4391, 47499), (13173, 15833)]