2580400

素因数分解:

$2^4\times 5^2\times {\mathrm{6451}}^1$

素因数の和:6469

約数の個数: 30

約数和(自身を含む): 6200372

約数和(自身を除く): 3619972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 6451, 12902, 25804, 32255, 51608, 64510, 103216, 129020, 161275, 258040, 322550, 516080, 645100, 1290200, 2580400]

約数ペア:

[(1, 2580400), (2, 1290200), (4, 645100), (5, 516080), (8, 322550), (10, 258040), (16, 161275), (20, 129020), (25, 103216), (40, 64510), (50, 51608), (80, 32255), (100, 25804), (200, 12902), (400, 6451)]