About the Number

2091990

2091989 ← → 2091991

2進数表記:111111110101111010110

漢数字表記:二百九万千九百九十

素因数分解:

2 1 × 3 1 × 5 1 × 137 1 × 509 1

素因数の和:656
約数の個数: 32
約数和(自身を含む): 5067360
約数和(自身を除く): 2975370

約数列:
[1, 2, 3, 5, 6, 10, 15, 30, 137, 274, 411, 509, 685, 822, 1018, 1370, 1527, 2055, 2545, 3054, 4110, 5090, 7635, 15270, 69733, 139466, 209199, 348665, 418398, 697330, 1045995, 2091990]

約数ペア:
[(1, 2091990), (2, 1045995), (3, 697330), (5, 418398), (6, 348665), (10, 209199), (15, 139466), (30, 69733), (137, 15270), (274, 7635), (411, 5090), (509, 4110), (685, 3054), (822, 2545), (1018, 2055), (1370, 1527)]

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