20993715

素因数分解:

$3^3\times 5^1\times {\mathrm{155509}}^1$

素因数の和:155523

約数の個数: 16

約数和(自身を含む): 37322400

約数和(自身を除く): 16328685

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 155509, 466527, 777545, 1399581, 2332635, 4198743, 6997905, 20993715]

約数ペア:

[(1, 20993715), (3, 6997905), (5, 4198743), (9, 2332635), (15, 1399581), (27, 777545), (45, 466527), (135, 155509)]