1980200

素因数分解:

$2^3\times 5^2\times {\mathrm{9901}}^1$

素因数の和:9917

約数の個数: 24

約数和(自身を含む): 4604430

約数和(自身を除く): 2624230

約数列:

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

約数ペア:

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