21380954

素因数分解:

$2^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{2039}}^1$

素因数の和:2162

約数の個数: 24

約数和(自身を含む): 37674720

約数和(自身を除く): 16293766

約数列:

[1, 2, 7, 14, 49, 98, 107, 214, 749, 1498, 2039, 4078, 5243, 10486, 14273, 28546, 99911, 199822, 218173, 436346, 1527211, 3054422, 10690477, 21380954]

約数ペア:

[(1, 21380954), (2, 10690477), (7, 3054422), (14, 1527211), (49, 436346), (98, 218173), (107, 199822), (214, 99911), (749, 28546), (1498, 14273), (2039, 10486), (4078, 5243)]