18930989

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{5231}}^1$

素因数の和:5296

約数の個数: 16

約数和(自身を含む): 24109056

約数和(自身を除く): 5178067

約数列:

[1, 7, 11, 47, 77, 329, 517, 3619, 5231, 36617, 57541, 245857, 402787, 1720999, 2704427, 18930989]

約数ペア:

[(1, 18930989), (7, 2704427), (11, 1720999), (47, 402787), (77, 245857), (329, 57541), (517, 36617), (3619, 5231)]