20661586

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{21841}}^1$

素因数の和:21897

約数の個数: 16

約数和(自身を含む): 34597728

約数和(自身を除く): 13936142

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 21841, 43682, 240251, 480502, 939163, 1878326, 10330793, 20661586]

約数ペア:

[(1, 20661586), (2, 10330793), (11, 1878326), (22, 939163), (43, 480502), (86, 240251), (473, 43682), (946, 21841)]