18705090747

素因数分解:

$3^1\times 7^1\times {\mathrm{6581}}^1\times {\mathrm{135347}}^1$

素因数の和:141938

約数の個数: 16

約数和(自身を含む): 28507537152

約数和(自身を除く): 9802446405

約数列:

[1, 3, 7, 21, 6581, 19743, 46067, 135347, 138201, 406041, 947429, 2842287, 890718607, 2672155821, 6235030249, 18705090747]

約数ペア:

[(1, 18705090747), (3, 6235030249), (7, 2672155821), (21, 890718607), (6581, 2842287), (19743, 947429), (46067, 406041), (135347, 138201)]