21796789

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1\times {\mathrm{439}}^1$

素因数の和:660

約数の個数: 16

約数和(自身を含む): 25724160

約数和(自身を除く): 3927371

約数列:

[1, 7, 41, 173, 287, 439, 1211, 3073, 7093, 17999, 49651, 75947, 125993, 531629, 3113827, 21796789]

約数ペア:

[(1, 21796789), (7, 3113827), (41, 531629), (173, 125993), (287, 75947), (439, 49651), (1211, 17999), (3073, 7093)]