20480252

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{1091}}^1$

素因数の和:1146

約数の個数: 36

約数和(自身を含む): 40773096

約数和(自身を除く): 20292844

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 361, 494, 722, 988, 1091, 1444, 2182, 4364, 4693, 9386, 14183, 18772, 20729, 28366, 41458, 56732, 82916, 269477, 393851, 538954, 787702, 1077908, 1575404, 5120063, 10240126, 20480252]

約数ペア:

[(1, 20480252), (2, 10240126), (4, 5120063), (13, 1575404), (19, 1077908), (26, 787702), (38, 538954), (52, 393851), (76, 269477), (247, 82916), (361, 56732), (494, 41458), (722, 28366), (988, 20729), (1091, 18772), (1444, 14183), (2182, 9386), (4364, 4693)]