21672740

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{2207}}^1$

素因数の和:2707

約数の個数: 24

約数和(自身を含む): 45626112

約数和(自身を除く): 23953372

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2207, 2455, 4414, 4910, 8828, 9820, 11035, 22070, 44140, 1083637, 2167274, 4334548, 5418185, 10836370, 21672740]

約数ペア:

[(1, 21672740), (2, 10836370), (4, 5418185), (5, 4334548), (10, 2167274), (20, 1083637), (491, 44140), (982, 22070), (1964, 11035), (2207, 9820), (2455, 8828), (4414, 4910)]