28409857

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{317}}^1$

素因数の和:421

約数の個数: 24

約数和(自身を含む): 34801920

約数和(自身を除く): 6392063

約数列:

[1, 7, 31, 49, 59, 217, 317, 413, 1519, 1829, 2219, 2891, 9827, 12803, 15533, 18703, 68789, 89621, 130921, 481523, 579793, 916447, 4058551, 28409857]

約数ペア:

[(1, 28409857), (7, 4058551), (31, 916447), (49, 579793), (59, 481523), (217, 130921), (317, 89621), (413, 68789), (1519, 18703), (1829, 15533), (2219, 12803), (2891, 9827)]