20874769664

素因数分解:

$2^8\times 7^1\times {\mathrm{653}}^1\times {\mathrm{17839}}^1$

素因数の和:18515

約数の個数: 72

約数和(自身を含む): 47696167680

約数和(自身を除く): 26821398016

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 653, 896, 1306, 1792, 2612, 4571, 5224, 9142, 10448, 17839, 18284, 20896, 35678, 36568, 41792, 71356, 73136, 83584, 124873, 142712, 146272, 167168, 249746, 285424, 292544, 499492, 570848, 585088, 998984, 1141696, 1170176, 1997968, 2283392, 3995936, 4566784, 7991872, 11648867, 15983744, 23297734, 31967488, 46595468, 81542069, 93190936, 163084138, 186381872, 326168276, 372763744, 652336552, 745527488, 1304673104, 1491054976, 2609346208, 2982109952, 5218692416, 10437384832, 20874769664]

約数ペア:

[(1, 20874769664), (2, 10437384832), (4, 5218692416), (7, 2982109952), (8, 2609346208), (14, 1491054976), (16, 1304673104), (28, 745527488), (32, 652336552), (56, 372763744), (64, 326168276), (112, 186381872), (128, 163084138), (224, 93190936), (256, 81542069), (448, 46595468), (653, 31967488), (896, 23297734), (1306, 15983744), (1792, 11648867), (2612, 7991872), (4571, 4566784), (5224, 3995936), (9142, 2283392), (10448, 1997968), (17839, 1170176), (18284, 1141696), (20896, 998984), (35678, 585088), (36568, 570848), (41792, 499492), (71356, 292544), (73136, 285424), (83584, 249746), (124873, 167168), (142712, 146272)]