6425000

素因数分解:

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

素因数の和:288

約数の個数: 48

約数和(自身を含む): 15116220

約数和(自身を除く): 8691220

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 257, 500, 514, 625, 1000, 1028, 1250, 1285, 2056, 2500, 2570, 3125, 5000, 5140, 6250, 6425, 10280, 12500, 12850, 25000, 25700, 32125, 51400, 64250, 128500, 160625, 257000, 321250, 642500, 803125, 1285000, 1606250, 3212500, 6425000]

約数ペア:

[(1, 6425000), (2, 3212500), (4, 1606250), (5, 1285000), (8, 803125), (10, 642500), (20, 321250), (25, 257000), (40, 160625), (50, 128500), (100, 64250), (125, 51400), (200, 32125), (250, 25700), (257, 25000), (500, 12850), (514, 12500), (625, 10280), (1000, 6425), (1028, 6250), (1250, 5140), (1285, 5000), (2056, 3125), (2500, 2570)]