81092020

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{1019}}^1$

素因数の和:1224

約数の個数: 48

約数和(自身を含む): 178899840

約数和(自身を除く): 97807820

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 173, 230, 346, 460, 692, 865, 1019, 1730, 2038, 3460, 3979, 4076, 5095, 7958, 10190, 15916, 19895, 20380, 23437, 39790, 46874, 79580, 93748, 117185, 176287, 234370, 352574, 468740, 705148, 881435, 1762870, 3525740, 4054601, 8109202, 16218404, 20273005, 40546010, 81092020]

約数ペア:

[(1, 81092020), (2, 40546010), (4, 20273005), (5, 16218404), (10, 8109202), (20, 4054601), (23, 3525740), (46, 1762870), (92, 881435), (115, 705148), (173, 468740), (230, 352574), (346, 234370), (460, 176287), (692, 117185), (865, 93748), (1019, 79580), (1730, 46874), (2038, 39790), (3460, 23437), (3979, 20380), (4076, 19895), (5095, 15916), (7958, 10190)]