20549505

素因数分解:

$3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{5209}}^1$

素因数の和:5480

約数の個数: 16

約数和(自身を含む): 33010560

約数和(自身を除く): 12461055

約数列:

[1, 3, 5, 15, 263, 789, 1315, 3945, 5209, 15627, 26045, 78135, 1369967, 4109901, 6849835, 20549505]

約数ペア:

[(1, 20549505), (3, 6849835), (5, 4109901), (15, 1369967), (263, 78135), (789, 26045), (1315, 15627), (3945, 5209)]