20782517

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:501

約数の個数: 24

約数和(自身を含む): 26080920

約数和(自身を除く): 5298403

約数列:

[1, 7, 17, 49, 61, 119, 409, 427, 833, 1037, 2863, 2989, 6953, 7259, 20041, 24949, 48671, 50813, 174643, 340697, 424133, 1222501, 2968931, 20782517]

約数ペア:

[(1, 20782517), (7, 2968931), (17, 1222501), (49, 424133), (61, 340697), (119, 174643), (409, 50813), (427, 48671), (833, 24949), (1037, 20041), (2863, 7259), (2989, 6953)]