About the Number

208988891991

208988891990 ← → 208988891992

2進数表記:11000010101000101101010110101101010111

漢数字表記:二千八十九億八千八百八十九万千九百九十一

素因数分解:

3 3 × 11 1 × 31 2 × 71 1 × 10313 1

素因数の和:10466
約数の個数: 96
約数和(自身を含む): 353956677120
約数和(自身を除く): 144967785129

約数列:
[1, 3, 9, 11, 27, 31, 33, 71, 93, 99, 213, 279, 297, 341, 639, 781, 837, 961, 1023, 1917, 2201, 2343, 2883, 3069, 6603, 7029, 8649, 9207, 10313, 10571, 19809, 21087, 24211, 25947, 30939, 31713, 59427, 68231, 72633, 92817, 95139, 113443, 204693, 217899, 278451, 285417, 319703, 340329, 614079, 653697, 732223, 750541, 959109, 1020987, 1842237, 2196669, 2251623, 2877327, 3062961, 3516733, 6590007, 6754869, 8054453, 8631981, 9910793, 10550199, 19770021, 20264607, 22698913, 24163359, 29732379, 31650597, 68096739, 72490077, 89197137, 94951791, 109018723, 204290217, 217470231, 249688043, 267591411, 327056169, 612870651, 703666303, 749064129, 981168507, 2110998909, 2247192387, 2943505521, 6332996727, 6741577161, 7740329333, 18998990181, 23220987999, 69662963997, 208988891991]

約数ペア:
[(1, 208988891991), (3, 69662963997), (9, 23220987999), (11, 18998990181), (27, 7740329333), (31, 6741577161), (33, 6332996727), (71, 2943505521), (93, 2247192387), (99, 2110998909), (213, 981168507), (279, 749064129), (297, 703666303), (341, 612870651), (639, 327056169), (781, 267591411), (837, 249688043), (961, 217470231), (1023, 204290217), (1917, 109018723), (2201, 94951791), (2343, 89197137), (2883, 72490077), (3069, 68096739), (6603, 31650597), (7029, 29732379), (8649, 24163359), (9207, 22698913), (10313, 20264607), (10571, 19770021), (19809, 10550199), (21087, 9910793), (24211, 8631981), (25947, 8054453), (30939, 6754869), (31713, 6590007), (59427, 3516733), (68231, 3062961), (72633, 2877327), (92817, 2251623), (95139, 2196669), (113443, 1842237), (204693, 1020987), (217899, 959109), (278451, 750541), (285417, 732223), (319703, 653697), (340329, 614079)]

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