19720376

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{189619}}^1$

素因数の和:189638

約数の個数: 16

約数和(自身を含む): 39820200

約数和(自身を除く): 20099824

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 189619, 379238, 758476, 1516952, 2465047, 4930094, 9860188, 19720376]

約数ペア:

[(1, 19720376), (2, 9860188), (4, 4930094), (8, 2465047), (13, 1516952), (26, 758476), (52, 379238), (104, 189619)]