21068307

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{180071}}^1$

素因数の和:180090

約数の個数: 12

約数和(自身を含む): 32773104

約数和(自身を除く): 11704797

約数列:

[1, 3, 9, 13, 39, 117, 180071, 540213, 1620639, 2340923, 7022769, 21068307]

約数ペア:

[(1, 21068307), (3, 7022769), (9, 2340923), (13, 1620639), (39, 540213), (117, 180071)]