25900000

素因数分解:

$2^5\times 5^5\times 7^1\times {\mathrm{37}}^1$

素因数の和:79

約数の個数: 144

約数和(自身を含む): 74807712

約数和(自身を除く): 48907712

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 37, 40, 50, 56, 70, 74, 80, 100, 112, 125, 140, 148, 160, 175, 185, 200, 224, 250, 259, 280, 296, 350, 370, 400, 500, 518, 560, 592, 625, 700, 740, 800, 875, 925, 1000, 1036, 1120, 1184, 1250, 1295, 1400, 1480, 1750, 1850, 2000, 2072, 2500, 2590, 2800, 2960, 3125, 3500, 3700, 4000, 4144, 4375, 4625, 5000, 5180, 5600, 5920, 6250, 6475, 7000, 7400, 8288, 8750, 9250, 10000, 10360, 12500, 12950, 14000, 14800, 17500, 18500, 20000, 20720, 21875, 23125, 25000, 25900, 28000, 29600, 32375, 35000, 37000, 41440, 43750, 46250, 50000, 51800, 64750, 70000, 74000, 87500, 92500, 100000, 103600, 115625, 129500, 140000, 148000, 161875, 175000, 185000, 207200, 231250, 259000, 323750, 350000, 370000, 462500, 518000, 647500, 700000, 740000, 809375, 925000, 1036000, 1295000, 1618750, 1850000, 2590000, 3237500, 3700000, 5180000, 6475000, 12950000, 25900000]

約数ペア:

[(1, 25900000), (2, 12950000), (4, 6475000), (5, 5180000), (7, 3700000), (8, 3237500), (10, 2590000), (14, 1850000), (16, 1618750), (20, 1295000), (25, 1036000), (28, 925000), (32, 809375), (35, 740000), (37, 700000), (40, 647500), (50, 518000), (56, 462500), (70, 370000), (74, 350000), (80, 323750), (100, 259000), (112, 231250), (125, 207200), (140, 185000), (148, 175000), (160, 161875), (175, 148000), (185, 140000), (200, 129500), (224, 115625), (250, 103600), (259, 100000), (280, 92500), (296, 87500), (350, 74000), (370, 70000), (400, 64750), (500, 51800), (518, 50000), (560, 46250), (592, 43750), (625, 41440), (700, 37000), (740, 35000), (800, 32375), (875, 29600), (925, 28000), (1000, 25900), (1036, 25000), (1120, 23125), (1184, 21875), (1250, 20720), (1295, 20000), (1400, 18500), (1480, 17500), (1750, 14800), (1850, 14000), (2000, 12950), (2072, 12500), (2500, 10360), (2590, 10000), (2800, 9250), (2960, 8750), (3125, 8288), (3500, 7400), (3700, 7000), (4000, 6475), (4144, 6250), (4375, 5920), (4625, 5600), (5000, 5180)]