28364287

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:379

約数の個数: 24

約数和(自身を含む): 34670592

約数和(自身を除く): 6306305

約数列:

[1, 7, 31, 49, 71, 217, 263, 497, 1519, 1841, 2201, 3479, 8153, 12887, 15407, 18673, 57071, 107849, 130711, 399497, 578863, 914977, 4052041, 28364287]

約数ペア:

[(1, 28364287), (7, 4052041), (31, 914977), (49, 578863), (71, 399497), (217, 130711), (263, 107849), (497, 57071), (1519, 18673), (1841, 15407), (2201, 12887), (3479, 8153)]