28285887

素因数分解:

$3^1\times 7^2\times {\mathrm{193}}^1\times {\mathrm{997}}^1$

素因数の和:1207

約数の個数: 24

約数和(自身を含む): 44143536

約数和(自身を除く): 15857649

約数列:

[1, 3, 7, 21, 49, 147, 193, 579, 997, 1351, 2991, 4053, 6979, 9457, 20937, 28371, 48853, 146559, 192421, 577263, 1346947, 4040841, 9428629, 28285887]

約数ペア:

[(1, 28285887), (3, 9428629), (7, 4040841), (21, 1346947), (49, 577263), (147, 192421), (193, 146559), (579, 48853), (997, 28371), (1351, 20937), (2991, 9457), (4053, 6979)]