19878992

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{7717}}^1$

素因数の和:7755

約数の個数: 40

約数和(自身を含む): 45937536

約数和(自身を除く): 26058544

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 56, 92, 112, 161, 184, 322, 368, 644, 1288, 2576, 7717, 15434, 30868, 54019, 61736, 108038, 123472, 177491, 216076, 354982, 432152, 709964, 864304, 1242437, 1419928, 2484874, 2839856, 4969748, 9939496, 19878992]

約数ペア:

[(1, 19878992), (2, 9939496), (4, 4969748), (7, 2839856), (8, 2484874), (14, 1419928), (16, 1242437), (23, 864304), (28, 709964), (46, 432152), (56, 354982), (92, 216076), (112, 177491), (161, 123472), (184, 108038), (322, 61736), (368, 54019), (644, 30868), (1288, 15434), (2576, 7717)]