28555317

素因数分解:

$3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{2887}}^1$

素因数の和:3057

約数の個数: 24

約数和(自身を含む): 47455616

約数和(自身を除く): 18900299

約数列:

[1, 3, 7, 9, 21, 63, 157, 471, 1099, 1413, 2887, 3297, 8661, 9891, 20209, 25983, 60627, 181881, 453259, 1359777, 3172813, 4079331, 9518439, 28555317]

約数ペア:

[(1, 28555317), (3, 9518439), (7, 4079331), (9, 3172813), (21, 1359777), (63, 453259), (157, 181881), (471, 60627), (1099, 25983), (1413, 20209), (2887, 9891), (3297, 8661)]