20975085

素因数分解:

$3^3\times 5^1\times {\mathrm{155371}}^1$

素因数の和:155385

約数の個数: 16

約数和(自身を含む): 37289280

約数和(自身を除く): 16314195

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 155371, 466113, 776855, 1398339, 2330565, 4195017, 6991695, 20975085]

約数ペア:

[(1, 20975085), (3, 6991695), (5, 4195017), (9, 2330565), (15, 1398339), (27, 776855), (45, 466113), (135, 155371)]