20899004

素因数分解:

$2^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{4943}}^1$

素因数の和:5105

約数の個数: 24

約数和(自身を含む): 42083328

約数和(自身を除く): 21184324

約数列:

[1, 2, 4, 7, 14, 28, 151, 302, 604, 1057, 2114, 4228, 4943, 9886, 19772, 34601, 69202, 138404, 746393, 1492786, 2985572, 5224751, 10449502, 20899004]

約数ペア:

[(1, 20899004), (2, 10449502), (4, 5224751), (7, 2985572), (14, 1492786), (28, 746393), (151, 138404), (302, 69202), (604, 34601), (1057, 19772), (2114, 9886), (4228, 4943)]