81560464

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{268291}}^1$

素因数の和:268318

約数の個数: 20

約数和(自身を含む): 166341040

約数和(自身を除く): 84780576

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 268291, 536582, 1073164, 2146328, 4292656, 5097529, 10195058, 20390116, 40780232, 81560464]

約数ペア:

[(1, 81560464), (2, 40780232), (4, 20390116), (8, 10195058), (16, 5097529), (19, 4292656), (38, 2146328), (76, 1073164), (152, 536582), (304, 268291)]