28880649

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1523}}^1$

素因数の和:1586

約数の個数: 36

約数和(自身を含む): 49688496

約数和(自身を除く): 20807847

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 1523, 2107, 2709, 4569, 6321, 10661, 13707, 18963, 31983, 65489, 74627, 95949, 196467, 223881, 458423, 589401, 671643, 1375269, 3208961, 4125807, 9626883, 28880649]

約数ペア:

[(1, 28880649), (3, 9626883), (7, 4125807), (9, 3208961), (21, 1375269), (43, 671643), (49, 589401), (63, 458423), (129, 223881), (147, 196467), (301, 95949), (387, 74627), (441, 65489), (903, 31983), (1523, 18963), (2107, 13707), (2709, 10661), (4569, 6321)]