2005128880

素因数分解:

$2^4\times 5^1\times {\mathrm{25064111}}^1$

素因数の和:25064124

約数の個数: 20

約数和(自身を含む): 4661924832

約数和(自身を除く): 2656795952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25064111, 50128222, 100256444, 125320555, 200512888, 250641110, 401025776, 501282220, 1002564440, 2005128880]

約数ペア:

[(1, 2005128880), (2, 1002564440), (4, 501282220), (5, 401025776), (8, 250641110), (10, 200512888), (16, 125320555), (20, 100256444), (40, 50128222), (80, 25064111)]