789987

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{647}}^1$

素因数の和:698

約数の個数: 16

約数和(自身を含む): 1181952

約数和(自身を除く): 391965

約数列:

[1, 3, 11, 33, 37, 111, 407, 647, 1221, 1941, 7117, 21351, 23939, 71817, 263329, 789987]

約数ペア:

[(1, 789987), (3, 263329), (11, 71817), (33, 23939), (37, 21351), (111, 7117), (407, 1941), (647, 1221)]