20571512

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{197803}}^1$

素因数の和:197822

約数の個数: 16

約数和(自身を含む): 41538840

約数和(自身を除く): 20967328

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 197803, 395606, 791212, 1582424, 2571439, 5142878, 10285756, 20571512]

約数ペア:

[(1, 20571512), (2, 10285756), (4, 5142878), (8, 2571439), (13, 1582424), (26, 791212), (52, 395606), (104, 197803)]