β

Μ

͵αωμ

२१८४०

٢١٨٤٠

XXMDCCCXL

二万一千八百四十

כא׳ תתמ

101010101010000

1002221220

11111100

2ec0

1dm0

guo

101010101010000

2, 3, 5, 7, 13

1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 1040, 1092, 1365, 1456, 1560, 1680, 1820, 2184, 2730, 3120, 3640, 4368, 5460, 7280, 10920, 21840

61488

21840 = 2 x 2 x 2 x 2 x 3 x 5 x 7 x 13

21839

21841