18811900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{9901}}^1$

素因数の和:9934

約数の個数: 36

約数和(自身を含む): 42974680

約数和(自身を除く): 24162780

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 9901, 19802, 39604, 49505, 99010, 188119, 198020, 247525, 376238, 495050, 752476, 940595, 990100, 1881190, 3762380, 4702975, 9405950, 18811900]

約数ペア:

[(1, 18811900), (2, 9405950), (4, 4702975), (5, 3762380), (10, 1881190), (19, 990100), (20, 940595), (25, 752476), (38, 495050), (50, 376238), (76, 247525), (95, 198020), (100, 188119), (190, 99010), (380, 49505), (475, 39604), (950, 19802), (1900, 9901)]