19806021

素因数分解:

$3^2\times {\mathrm{107}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 29281824

約数和(自身を除く): 9475803

約数列:

[1, 3, 9, 107, 131, 157, 321, 393, 471, 963, 1179, 1413, 14017, 16799, 20567, 42051, 50397, 61701, 126153, 151191, 185103, 2200669, 6602007, 19806021]

約数ペア:

[(1, 19806021), (3, 6602007), (9, 2200669), (107, 185103), (131, 151191), (157, 126153), (321, 61701), (393, 50397), (471, 42051), (963, 20567), (1179, 16799), (1413, 14017)]