18920865

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{337}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 32123520

約数和(自身を除く): 13202655

約数列:

[1, 3, 5, 15, 19, 57, 95, 197, 285, 337, 591, 985, 1011, 1685, 2955, 3743, 5055, 6403, 11229, 18715, 19209, 32015, 56145, 66389, 96045, 199167, 331945, 995835, 1261391, 3784173, 6306955, 18920865]

約数ペア:

[(1, 18920865), (3, 6306955), (5, 3784173), (15, 1261391), (19, 995835), (57, 331945), (95, 199167), (197, 96045), (285, 66389), (337, 56145), (591, 32015), (985, 19209), (1011, 18715), (1685, 11229), (2955, 6403), (3743, 5055)]