2570000

素因数分解:

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

素因数の和:285

約数の個数: 50

約数和(自身を含む): 6246438

約数和(自身を除く): 3676438

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 257, 400, 500, 514, 625, 1000, 1028, 1250, 1285, 2000, 2056, 2500, 2570, 4112, 5000, 5140, 6425, 10000, 10280, 12850, 20560, 25700, 32125, 51400, 64250, 102800, 128500, 160625, 257000, 321250, 514000, 642500, 1285000, 2570000]

約数ペア:

[(1, 2570000), (2, 1285000), (4, 642500), (5, 514000), (8, 321250), (10, 257000), (16, 160625), (20, 128500), (25, 102800), (40, 64250), (50, 51400), (80, 32125), (100, 25700), (125, 20560), (200, 12850), (250, 10280), (257, 10000), (400, 6425), (500, 5140), (514, 5000), (625, 4112), (1000, 2570), (1028, 2500), (1250, 2056), (1285, 2000)]