20661844

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{131}}^2$

素因数の和:316

約数の個数: 36

約数和(自身を含む): 42609952

約数和(自身を除く): 21948108

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 131, 172, 262, 301, 524, 602, 917, 1204, 1834, 3668, 5633, 11266, 17161, 22532, 34322, 39431, 68644, 78862, 120127, 157724, 240254, 480508, 737923, 1475846, 2951692, 5165461, 10330922, 20661844]

約数ペア:

[(1, 20661844), (2, 10330922), (4, 5165461), (7, 2951692), (14, 1475846), (28, 737923), (43, 480508), (86, 240254), (131, 157724), (172, 120127), (262, 78862), (301, 68644), (524, 39431), (602, 34322), (917, 22532), (1204, 17161), (1834, 11266), (3668, 5633)]