102800

素因数分解:

$2^4\times 5^2\times {\mathrm{257}}^1$

素因数の和:275

約数の個数: 30

約数和(自身を含む): 247938

約数和(自身を除く): 145138

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 257, 400, 514, 1028, 1285, 2056, 2570, 4112, 5140, 6425, 10280, 12850, 20560, 25700, 51400, 102800]

約数ペア:

[(1, 102800), (2, 51400), (4, 25700), (5, 20560), (8, 12850), (10, 10280), (16, 6425), (20, 5140), (25, 4112), (40, 2570), (50, 2056), (80, 1285), (100, 1028), (200, 514), (257, 400)]