20974863

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{76831}}^1$

素因数の和:76854

約数の個数: 16

約数和(自身を含む): 34420736

約数和(自身を除く): 13445873

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 76831, 230493, 537817, 998803, 1613451, 2996409, 6991621, 20974863]

約数ペア:

[(1, 20974863), (3, 6991621), (7, 2996409), (13, 1613451), (21, 998803), (39, 537817), (91, 230493), (273, 76831)]