3960400

素因数分解:

$2^4\times 5^2\times {\mathrm{9901}}^1$

素因数の和:9919

約数の個数: 30

約数和(自身を含む): 9515822

約数和(自身を除く): 5555422

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 9901, 19802, 39604, 49505, 79208, 99010, 158416, 198020, 247525, 396040, 495050, 792080, 990100, 1980200, 3960400]

約数ペア:

[(1, 3960400), (2, 1980200), (4, 990100), (5, 792080), (8, 495050), (10, 396040), (16, 247525), (20, 198020), (25, 158416), (40, 99010), (50, 79208), (80, 49505), (100, 39604), (200, 19802), (400, 9901)]