20908426

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5903}}^1$

素因数の和:5946

約数の個数: 32

約数和(自身を含む): 40808448

約数和(自身を除く): 19900022

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 77, 154, 161, 253, 322, 506, 1771, 3542, 5903, 11806, 41321, 64933, 82642, 129866, 135769, 271538, 454531, 909062, 950383, 1493459, 1900766, 2986918, 10454213, 20908426]

約数ペア:

[(1, 20908426), (2, 10454213), (7, 2986918), (11, 1900766), (14, 1493459), (22, 950383), (23, 909062), (46, 454531), (77, 271538), (154, 135769), (161, 129866), (253, 82642), (322, 64933), (506, 41321), (1771, 11806), (3542, 5903)]