18897723

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8501}}^1$

素因数の和:8539

約数の個数: 24

約数和(自身を含む): 30947280

約数和(自身を除く): 12049557

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 8501, 25503, 76509, 110513, 161519, 331539, 484557, 994617, 1453671, 2099747, 6299241, 18897723]

約数ペア:

[(1, 18897723), (3, 6299241), (9, 2099747), (13, 1453671), (19, 994617), (39, 484557), (57, 331539), (117, 161519), (171, 110513), (247, 76509), (741, 25503), (2223, 8501)]