About the Number

128784672

128784671 ← → 128784673

2進数表記:111101011010001100100100000

漢数字表記:一億二千八百七十八万四千六百七十二

素因数分解:

2 5 × 3 2 × 239 1 × 1871 1

素因数の和:2126
約数の個数: 72
約数和(自身を含む): 367960320
約数和(自身を除く): 239175648

約数列:
[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 239, 288, 478, 717, 956, 1434, 1871, 1912, 2151, 2868, 3742, 3824, 4302, 5613, 5736, 7484, 7648, 8604, 11226, 11472, 14968, 16839, 17208, 22452, 22944, 29936, 33678, 34416, 44904, 59872, 67356, 68832, 89808, 134712, 179616, 269424, 447169, 538848, 894338, 1341507, 1788676, 2683014, 3577352, 4024521, 5366028, 7154704, 8049042, 10732056, 14309408, 16098084, 21464112, 32196168, 42928224, 64392336, 128784672]

約数ペア:
[(1, 128784672), (2, 64392336), (3, 42928224), (4, 32196168), (6, 21464112), (8, 16098084), (9, 14309408), (12, 10732056), (16, 8049042), (18, 7154704), (24, 5366028), (32, 4024521), (36, 3577352), (48, 2683014), (72, 1788676), (96, 1341507), (144, 894338), (239, 538848), (288, 447169), (478, 269424), (717, 179616), (956, 134712), (1434, 89808), (1871, 68832), (1912, 67356), (2151, 59872), (2868, 44904), (3742, 34416), (3824, 33678), (4302, 29936), (5613, 22944), (5736, 22452), (7484, 17208), (7648, 16839), (8604, 14968), (11226, 11472)]

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