21894790

素因数分解:

$2^1\times 5^1\times {\mathrm{239}}^1\times {\mathrm{9161}}^1$

素因数の和:9407

約数の個数: 16

約数和(自身を含む): 39579840

約数和(自身を除く): 17685050

約数列:

[1, 2, 5, 10, 239, 478, 1195, 2390, 9161, 18322, 45805, 91610, 2189479, 4378958, 10947395, 21894790]

約数ペア:

[(1, 21894790), (2, 10947395), (5, 4378958), (10, 2189479), (239, 91610), (478, 45805), (1195, 18322), (2390, 9161)]