About the Number

81908288

81908287 ← → 81908289

2進数表記:100111000011101001001000000

漢数字表記:八千百九十万八千二百八十八

素因数分解:

2 6 × 7 1 × 11 2 × 1511 1

素因数の和:1552
約数の個数: 84
約数和(自身を含む): 204313536
約数和(自身を除く): 122405248

約数列:
[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 64, 77, 88, 112, 121, 154, 176, 224, 242, 308, 352, 448, 484, 616, 704, 847, 968, 1232, 1511, 1694, 1936, 2464, 3022, 3388, 3872, 4928, 6044, 6776, 7744, 10577, 12088, 13552, 16621, 21154, 24176, 27104, 33242, 42308, 48352, 54208, 66484, 84616, 96704, 116347, 132968, 169232, 182831, 232694, 265936, 338464, 365662, 465388, 531872, 676928, 731324, 930776, 1063744, 1279817, 1462648, 1861552, 2559634, 2925296, 3723104, 5119268, 5850592, 7446208, 10238536, 11701184, 20477072, 40954144, 81908288]

約数ペア:
[(1, 81908288), (2, 40954144), (4, 20477072), (7, 11701184), (8, 10238536), (11, 7446208), (14, 5850592), (16, 5119268), (22, 3723104), (28, 2925296), (32, 2559634), (44, 1861552), (56, 1462648), (64, 1279817), (77, 1063744), (88, 930776), (112, 731324), (121, 676928), (154, 531872), (176, 465388), (224, 365662), (242, 338464), (308, 265936), (352, 232694), (448, 182831), (484, 169232), (616, 132968), (704, 116347), (847, 96704), (968, 84616), (1232, 66484), (1511, 54208), (1694, 48352), (1936, 42308), (2464, 33242), (3022, 27104), (3388, 24176), (3872, 21154), (4928, 16621), (6044, 13552), (6776, 12088), (7744, 10577)]

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