About the Number

289380728

289380727 ← → 289380729

2進数表記:10001001111111001100101111000

漢数字表記:二億八千九百三十八万七百二十八

素因数分解:

2 3 × 7 1 × 13 2 × 30577 1

素因数の和:30616
約数の個数: 48
約数和(自身を含む): 671492880
約数和(自身を除く): 382112152

約数列:
[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 169, 182, 338, 364, 676, 728, 1183, 1352, 2366, 4732, 9464, 30577, 61154, 122308, 214039, 244616, 397501, 428078, 795002, 856156, 1590004, 1712312, 2782507, 3180008, 5167513, 5565014, 10335026, 11130028, 20670052, 22260056, 36172591, 41340104, 72345182, 144690364, 289380728]

約数ペア:
[(1, 289380728), (2, 144690364), (4, 72345182), (7, 41340104), (8, 36172591), (13, 22260056), (14, 20670052), (26, 11130028), (28, 10335026), (52, 5565014), (56, 5167513), (91, 3180008), (104, 2782507), (169, 1712312), (182, 1590004), (338, 856156), (364, 795002), (676, 428078), (728, 397501), (1183, 244616), (1352, 214039), (2366, 122308), (4732, 61154), (9464, 30577)]

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