21896847

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 37889280

約数和(自身を除く): 15992433

約数列:

[1, 3, 7, 9, 21, 43, 59, 63, 129, 137, 177, 301, 387, 411, 413, 531, 903, 959, 1233, 1239, 2537, 2709, 2877, 3717, 5891, 7611, 8083, 8631, 17673, 17759, 22833, 24249, 41237, 53019, 53277, 56581, 72747, 123711, 159831, 169743, 347569, 371133, 509229, 1042707, 2432983, 3128121, 7298949, 21896847]

約数ペア:

[(1, 21896847), (3, 7298949), (7, 3128121), (9, 2432983), (21, 1042707), (43, 509229), (59, 371133), (63, 347569), (129, 169743), (137, 159831), (177, 123711), (301, 72747), (387, 56581), (411, 53277), (413, 53019), (531, 41237), (903, 24249), (959, 22833), (1233, 17759), (1239, 17673), (2537, 8631), (2709, 8083), (2877, 7611), (3717, 5891)]