20865196

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{6679}}^1$

素因数の和:6765

約数の個数: 24

約数和(自身を含む): 40400640

約数和(自身を除く): 19535444

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 6679, 13358, 26716, 73469, 146938, 293876, 474209, 948418, 1896836, 5216299, 10432598, 20865196]

約数ペア:

[(1, 20865196), (2, 10432598), (4, 5216299), (11, 1896836), (22, 948418), (44, 474209), (71, 293876), (142, 146938), (284, 73469), (781, 26716), (1562, 13358), (3124, 6679)]