18886881

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{467}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 29248128

約数和(自身を除く): 10361247

約数列:

[1, 3, 13, 17, 39, 51, 61, 183, 221, 467, 663, 793, 1037, 1401, 2379, 3111, 6071, 7939, 13481, 18213, 23817, 28487, 40443, 85461, 103207, 309621, 370331, 484279, 1110993, 1452837, 6295627, 18886881]

約数ペア:

[(1, 18886881), (3, 6295627), (13, 1452837), (17, 1110993), (39, 484279), (51, 370331), (61, 309621), (183, 103207), (221, 85461), (467, 40443), (663, 28487), (793, 23817), (1037, 18213), (1401, 13481), (2379, 7939), (3111, 6071)]