20408836

素因数分解:

$2^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{4027}}^1$

素因数の和:4219

約数の個数: 24

約数和(自身を含む): 41053376

約数和(自身を除く): 20644540

約数列:

[1, 2, 4, 7, 14, 28, 181, 362, 724, 1267, 2534, 4027, 5068, 8054, 16108, 28189, 56378, 112756, 728887, 1457774, 2915548, 5102209, 10204418, 20408836]

約数ペア:

[(1, 20408836), (2, 10204418), (4, 5102209), (7, 2915548), (14, 1457774), (28, 728887), (181, 112756), (362, 56378), (724, 28189), (1267, 16108), (2534, 8054), (4027, 5068)]