20558021

素因数分解:

${\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 24131520

約数和(自身を除く): 3573499

約数列:

[1, 11, 23, 83, 89, 121, 253, 913, 979, 1909, 2047, 2783, 7387, 10043, 10769, 20999, 22517, 81257, 169901, 230989, 247687, 893827, 1868911, 20558021]

約数ペア:

[(1, 20558021), (11, 1868911), (23, 893827), (83, 247687), (89, 230989), (121, 169901), (253, 81257), (913, 22517), (979, 20999), (1909, 10769), (2047, 10043), (2783, 7387)]