215778899

素因数分解:

$7^3\times {\mathrm{61}}^1\times {\mathrm{10313}}^1$

素因数の和:10395

約数の個数: 16

約数和(自身を含む): 255787200

約数和(自身を除く): 40008301

約数列:

[1, 7, 49, 61, 343, 427, 2989, 10313, 20923, 72191, 505337, 629093, 3537359, 4403651, 30825557, 215778899]

約数ペア:

[(1, 215778899), (7, 30825557), (49, 4403651), (61, 3537359), (343, 629093), (427, 505337), (2989, 72191), (10313, 20923)]