19871740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{141941}}^1$

素因数の和:141957

約数の個数: 24

約数和(自身を含む): 47692512

約数和(自身を除く): 27820772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 141941, 283882, 567764, 709705, 993587, 1419410, 1987174, 2838820, 3974348, 4967935, 9935870, 19871740]

約数ペア:

[(1, 19871740), (2, 9935870), (4, 4967935), (5, 3974348), (7, 2838820), (10, 1987174), (14, 1419410), (20, 993587), (28, 709705), (35, 567764), (70, 283882), (140, 141941)]