209849589

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{180749}}^1$

素因数の和:180801

約数の個数: 16

約数和(自身を含む): 318120000

約数和(自身を除く): 108270411

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 180749, 542247, 1626741, 4880223, 7772207, 23316621, 69949863, 209849589]

約数ペア:

[(1, 209849589), (3, 69949863), (9, 23316621), (27, 7772207), (43, 4880223), (129, 1626741), (387, 542247), (1161, 180749)]