209400513

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{140443}}^1$

素因数の和:140524

約数の個数: 16

約数和(自身を含む): 323582976

約数和(自身を除く): 114182463

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 140443, 421329, 983101, 2949303, 9971453, 29914359, 69800171, 209400513]

約数ペア:

[(1, 209400513), (3, 69800171), (7, 29914359), (21, 9971453), (71, 2949303), (213, 983101), (497, 421329), (1491, 140443)]