19963017

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{6661}}^1$

素因数の和:6710

約数の個数: 20

約数和(自身を含む): 30631876

約数和(自身を除く): 10668859

約数列:

[1, 3, 9, 27, 37, 81, 111, 333, 999, 2997, 6661, 19983, 59949, 179847, 246457, 539541, 739371, 2218113, 6654339, 19963017]

約数ペア:

[(1, 19963017), (3, 6654339), (9, 2218113), (27, 739371), (37, 539541), (81, 246457), (111, 179847), (333, 59949), (999, 19983), (2997, 6661)]