21000474608

素因数分解:

$2^4\times {\mathrm{227}}^1\times {\mathrm{439}}^1\times {\mathrm{13171}}^1$

素因数の和:13845

約数の個数: 40

約数和(自身を含む): 40963866240

約数和(自身を除く): 19963391632

約数列:

[1, 2, 4, 8, 16, 227, 439, 454, 878, 908, 1756, 1816, 3512, 3632, 7024, 13171, 26342, 52684, 99653, 105368, 199306, 210736, 398612, 797224, 1594448, 2989817, 5782069, 5979634, 11564138, 11959268, 23128276, 23918536, 46256552, 47837072, 92513104, 1312529663, 2625059326, 5250118652, 10500237304, 21000474608]

約数ペア:

[(1, 21000474608), (2, 10500237304), (4, 5250118652), (8, 2625059326), (16, 1312529663), (227, 92513104), (439, 47837072), (454, 46256552), (878, 23918536), (908, 23128276), (1756, 11959268), (1816, 11564138), (3512, 5979634), (3632, 5782069), (7024, 2989817), (13171, 1594448), (26342, 797224), (52684, 398612), (99653, 210736), (105368, 199306)]