19905669

素因数分解:

$3^4\times 7^1\times {\mathrm{35107}}^1$

素因数の和:35126

約数の個数: 20

約数和(自身を含む): 33984544

約数和(自身を除く): 14078875

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 35107, 105321, 245749, 315963, 737247, 947889, 2211741, 2843667, 6635223, 19905669]

約数ペア:

[(1, 19905669), (3, 6635223), (7, 2843667), (9, 2211741), (21, 947889), (27, 737247), (63, 315963), (81, 245749), (189, 105321), (567, 35107)]