5140000

素因数分解:

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

素因数の和:287

約数の個数: 60

約数和(自身を含む): 12694374

約数和(自身を除く): 7554374

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 257, 400, 500, 514, 625, 800, 1000, 1028, 1250, 1285, 2000, 2056, 2500, 2570, 4000, 4112, 5000, 5140, 6425, 8224, 10000, 10280, 12850, 20000, 20560, 25700, 32125, 41120, 51400, 64250, 102800, 128500, 160625, 205600, 257000, 321250, 514000, 642500, 1028000, 1285000, 2570000, 5140000]

約数ペア:

[(1, 5140000), (2, 2570000), (4, 1285000), (5, 1028000), (8, 642500), (10, 514000), (16, 321250), (20, 257000), (25, 205600), (32, 160625), (40, 128500), (50, 102800), (80, 64250), (100, 51400), (125, 41120), (160, 32125), (200, 25700), (250, 20560), (257, 20000), (400, 12850), (500, 10280), (514, 10000), (625, 8224), (800, 6425), (1000, 5140), (1028, 5000), (1250, 4112), (1285, 4000), (2000, 2570), (2056, 2500)]