19900287

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{3407}}^1$

素因数の和:3483

約数の個数: 24

約数和(自身を含む): 31898880

約数和(自身を除く): 11998593

約数列:

[1, 3, 9, 11, 33, 59, 99, 177, 531, 649, 1947, 3407, 5841, 10221, 30663, 37477, 112431, 201013, 337293, 603039, 1809117, 2211143, 6633429, 19900287]

約数ペア:

[(1, 19900287), (3, 6633429), (9, 2211143), (11, 1809117), (33, 603039), (59, 337293), (99, 201013), (177, 112431), (531, 37477), (649, 30663), (1947, 10221), (3407, 5841)]