28009000

素因数分解:

$2^3\times 5^3\times {\mathrm{37}}^1\times {\mathrm{757}}^1$

素因数の和:815

約数の個数: 64

約数和(自身を含む): 67401360

約数和(自身を除く): 39392360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 37, 40, 50, 74, 100, 125, 148, 185, 200, 250, 296, 370, 500, 740, 757, 925, 1000, 1480, 1514, 1850, 3028, 3700, 3785, 4625, 6056, 7400, 7570, 9250, 15140, 18500, 18925, 28009, 30280, 37000, 37850, 56018, 75700, 94625, 112036, 140045, 151400, 189250, 224072, 280090, 378500, 560180, 700225, 757000, 1120360, 1400450, 2800900, 3501125, 5601800, 7002250, 14004500, 28009000]

約数ペア:

[(1, 28009000), (2, 14004500), (4, 7002250), (5, 5601800), (8, 3501125), (10, 2800900), (20, 1400450), (25, 1120360), (37, 757000), (40, 700225), (50, 560180), (74, 378500), (100, 280090), (125, 224072), (148, 189250), (185, 151400), (200, 140045), (250, 112036), (296, 94625), (370, 75700), (500, 56018), (740, 37850), (757, 37000), (925, 30280), (1000, 28009), (1480, 18925), (1514, 18500), (1850, 15140), (3028, 9250), (3700, 7570), (3785, 7400), (4625, 6056)]