About the Number

289172989

289172988 ← → 289172990

2進数表記:10001001111000110110111111101

漢数字表記:二億八千九百十七万二千九百八十九

素因数分解:

7 1 × 19 1 × 71 1 × 113 1 × 271 1

素因数の和:481
約数の個数: 32
約数和(自身を含む): 357212160
約数和(自身を除く): 68039171

約数列:
[1, 7, 19, 71, 113, 133, 271, 497, 791, 1349, 1897, 2147, 5149, 8023, 9443, 15029, 19241, 30623, 36043, 56161, 134687, 152437, 214361, 365579, 581837, 1067059, 2174233, 2559053, 4072859, 15219631, 41310427, 289172989]

約数ペア:
[(1, 289172989), (7, 41310427), (19, 15219631), (71, 4072859), (113, 2559053), (133, 2174233), (271, 1067059), (497, 581837), (791, 365579), (1349, 214361), (1897, 152437), (2147, 134687), (5149, 56161), (8023, 36043), (9443, 30623), (15029, 19241)]

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