21269353

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1\times {\mathrm{389}}^1$

素因数の和:576

約数の個数: 16

約数和(自身を含む): 24935040

約数和(自身を除く): 3665687

約数列:

[1, 7, 73, 107, 389, 511, 749, 2723, 7811, 28397, 41623, 54677, 198779, 291361, 3038479, 21269353]

約数ペア:

[(1, 21269353), (7, 3038479), (73, 291361), (107, 198779), (389, 54677), (511, 41623), (749, 28397), (2723, 7811)]