About the Number

189009990

189009989 ← → 189009991

2進数表記:1011010001000001000001000110

漢数字表記:一億八千九百万九千九百九十

素因数分解:

2 1 × 3 3 × 5 1 × 13 1 × 53849 1

素因数の和:53878
約数の個数: 64
約数和(自身を含む): 542808000
約数和(自身を除く): 353798010

約数列:
[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 78, 90, 117, 130, 135, 195, 234, 270, 351, 390, 585, 702, 1170, 1755, 3510, 53849, 107698, 161547, 269245, 323094, 484641, 538490, 700037, 807735, 969282, 1400074, 1453923, 1615470, 2100111, 2423205, 2907846, 3500185, 4200222, 4846410, 6300333, 7000370, 7269615, 10500555, 12600666, 14539230, 18900999, 21001110, 31501665, 37801998, 63003330, 94504995, 189009990]

約数ペア:
[(1, 189009990), (2, 94504995), (3, 63003330), (5, 37801998), (6, 31501665), (9, 21001110), (10, 18900999), (13, 14539230), (15, 12600666), (18, 10500555), (26, 7269615), (27, 7000370), (30, 6300333), (39, 4846410), (45, 4200222), (54, 3500185), (65, 2907846), (78, 2423205), (90, 2100111), (117, 1615470), (130, 1453923), (135, 1400074), (195, 969282), (234, 807735), (270, 700037), (351, 538490), (390, 484641), (585, 323094), (702, 269245), (1170, 161547), (1755, 107698), (3510, 53849)]

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