18816400

素因数分解:

$2^4\times 5^2\times {\mathrm{47041}}^1$

素因数の和:47059

約数の個数: 30

約数和(自身を含む): 45207362

約数和(自身を除く): 26390962

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 47041, 94082, 188164, 235205, 376328, 470410, 752656, 940820, 1176025, 1881640, 2352050, 3763280, 4704100, 9408200, 18816400]

約数ペア:

[(1, 18816400), (2, 9408200), (4, 4704100), (5, 3763280), (8, 2352050), (10, 1881640), (16, 1176025), (20, 940820), (25, 752656), (40, 470410), (50, 376328), (80, 235205), (100, 188164), (200, 94082), (400, 47041)]