About the Number

208990090

208990089 ← → 208990091

2進数表記:1100011101001110111110001010

漢数字表記:二億八百九十九万九十

素因数分解:

2 1 × 5 1 × 103 1 × 331 1 × 613 1

素因数の和:1054
約数の個数: 32
約数和(自身を含む): 381603456
約数和(自身を除く): 172613366

約数列:
[1, 2, 5, 10, 103, 206, 331, 515, 613, 662, 1030, 1226, 1655, 3065, 3310, 6130, 34093, 63139, 68186, 126278, 170465, 202903, 315695, 340930, 405806, 631390, 1014515, 2029030, 20899009, 41798018, 104495045, 208990090]

約数ペア:
[(1, 208990090), (2, 104495045), (5, 41798018), (10, 20899009), (103, 2029030), (206, 1014515), (331, 631390), (515, 405806), (613, 340930), (662, 315695), (1030, 202903), (1226, 170465), (1655, 126278), (3065, 68186), (3310, 63139), (6130, 34093)]

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