87657560

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{8527}}^1$

素因数の和:8795

約数の個数: 32

約数和(自身を含む): 198020160

約数和(自身を除く): 110362600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 8527, 10280, 17054, 34108, 42635, 68216, 85270, 170540, 341080, 2191439, 4382878, 8765756, 10957195, 17531512, 21914390, 43828780, 87657560]

約数ペア:

[(1, 87657560), (2, 43828780), (4, 21914390), (5, 17531512), (8, 10957195), (10, 8765756), (20, 4382878), (40, 2191439), (257, 341080), (514, 170540), (1028, 85270), (1285, 68216), (2056, 42635), (2570, 34108), (5140, 17054), (8527, 10280)]