21331792

素因数分解:

$2^4\times {\mathrm{661}}^1\times {\mathrm{2017}}^1$

素因数の和:2686

約数の個数: 20

約数和(自身を含む): 41413396

約数和(自身を除く): 20081604

約数列:

[1, 2, 4, 8, 16, 661, 1322, 2017, 2644, 4034, 5288, 8068, 10576, 16136, 32272, 1333237, 2666474, 5332948, 10665896, 21331792]

約数ペア:

[(1, 21331792), (2, 10665896), (4, 5332948), (8, 2666474), (16, 1333237), (661, 32272), (1322, 16136), (2017, 10576), (2644, 8068), (4034, 5288)]