18967767

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:168

約数の個数: 64

約数和(自身を含む): 33997824

約数和(自身を除く): 15030057

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 61, 67, 91, 119, 183, 201, 221, 273, 357, 427, 469, 663, 793, 871, 1037, 1139, 1281, 1407, 1547, 2379, 2613, 3111, 3417, 4087, 4641, 5551, 6097, 7259, 7973, 12261, 13481, 14807, 16653, 18291, 21777, 23919, 28609, 40443, 44421, 53131, 69479, 85827, 94367, 103649, 159393, 208437, 283101, 310947, 371917, 486353, 903227, 1115751, 1459059, 2709681, 6322589, 18967767]

約数ペア:

[(1, 18967767), (3, 6322589), (7, 2709681), (13, 1459059), (17, 1115751), (21, 903227), (39, 486353), (51, 371917), (61, 310947), (67, 283101), (91, 208437), (119, 159393), (183, 103649), (201, 94367), (221, 85827), (273, 69479), (357, 53131), (427, 44421), (469, 40443), (663, 28609), (793, 23919), (871, 21777), (1037, 18291), (1139, 16653), (1281, 14807), (1407, 13481), (1547, 12261), (2379, 7973), (2613, 7259), (3111, 6097), (3417, 5551), (4087, 4641)]