19409404

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{4987}}^1$

素因数の和:5137

約数の個数: 24

約数和(自身を含む): 39105920

約数和(自身を除く): 19696516

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 4987, 9974, 19948, 34909, 69818, 139636, 693193, 1386386, 2772772, 4852351, 9704702, 19409404]

約数ペア:

[(1, 19409404), (2, 9704702), (4, 4852351), (7, 2772772), (14, 1386386), (28, 693193), (139, 139636), (278, 69818), (556, 34909), (973, 19948), (1946, 9974), (3892, 4987)]