209940995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{21089}}^1$

素因数の和:21286

約数の個数: 16

約数和(自身を含む): 276363360

約数和(自身を除く): 66422365

約数列:

[1, 5, 11, 55, 181, 905, 1991, 9955, 21089, 105445, 231979, 1159895, 3817109, 19085545, 41988199, 209940995]

約数ペア:

[(1, 209940995), (5, 41988199), (11, 19085545), (55, 3817109), (181, 1159895), (905, 231979), (1991, 105445), (9955, 21089)]