81691888

素因数分解:

$2^4\times {\mathrm{199}}^1\times {\mathrm{25657}}^1$

素因数の和:25864

約数の個数: 20

約数和(自身を含む): 159079600

約数和(自身を除く): 77387712

約数列:

[1, 2, 4, 8, 16, 199, 398, 796, 1592, 3184, 25657, 51314, 102628, 205256, 410512, 5105743, 10211486, 20422972, 40845944, 81691888]

約数ペア:

[(1, 81691888), (2, 40845944), (4, 20422972), (8, 10211486), (16, 5105743), (199, 410512), (398, 205256), (796, 102628), (1592, 51314), (3184, 25657)]