81043408

素因数分解:

$2^4\times {\mathrm{257}}^1\times {\mathrm{19709}}^1$

素因数の和:19974

約数の個数: 20

約数和(自身を含む): 157640580

約数和(自身を除く): 76597172

約数列:

[1, 2, 4, 8, 16, 257, 514, 1028, 2056, 4112, 19709, 39418, 78836, 157672, 315344, 5065213, 10130426, 20260852, 40521704, 81043408]

約数ペア:

[(1, 81043408), (2, 40521704), (4, 20260852), (8, 10130426), (16, 5065213), (257, 315344), (514, 157672), (1028, 78836), (2056, 39418), (4112, 19709)]