16991541

素因数分解:

$3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{1559}}^1$

素因数の和:1745

約数の個数: 24

約数和(自身を含む): 28229760

約数和(自身を除く): 11238219

約数列:

[1, 3, 7, 9, 21, 63, 173, 519, 1211, 1557, 1559, 3633, 4677, 10899, 10913, 14031, 32739, 98217, 269707, 809121, 1887949, 2427363, 5663847, 16991541]

約数ペア:

[(1, 16991541), (3, 5663847), (7, 2427363), (9, 1887949), (21, 809121), (63, 269707), (173, 98217), (519, 32739), (1211, 14031), (1557, 10913), (1559, 10899), (3633, 4677)]