20797808

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{15661}}^1$

素因数の和:15752

約数の個数: 20

約数和(自身を含む): 40783848

約数和(自身を除く): 19986040

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 15661, 31322, 62644, 125288, 250576, 1299863, 2599726, 5199452, 10398904, 20797808]

約数ペア:

[(1, 20797808), (2, 10398904), (4, 5199452), (8, 2599726), (16, 1299863), (83, 250576), (166, 125288), (332, 62644), (664, 31322), (1328, 15661)]