About the Number

81390000

81389999 ← → 81390001

2進数表記:100110110011110100110110000

漢数字表記:八千百三十九万

素因数分解:

2 4 × 3 1 × 5 4 × 2713 1

素因数の和:2744
約数の個数: 100
約数和(自身を含む): 262834616
約数和(自身を除く): 181444616

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 60, 75, 80, 100, 120, 125, 150, 200, 240, 250, 300, 375, 400, 500, 600, 625, 750, 1000, 1200, 1250, 1500, 1875, 2000, 2500, 2713, 3000, 3750, 5000, 5426, 6000, 7500, 8139, 10000, 10852, 13565, 15000, 16278, 21704, 27130, 30000, 32556, 40695, 43408, 54260, 65112, 67825, 81390, 108520, 130224, 135650, 162780, 203475, 217040, 271300, 325560, 339125, 406950, 542600, 651120, 678250, 813900, 1017375, 1085200, 1356500, 1627800, 1695625, 2034750, 2713000, 3255600, 3391250, 4069500, 5086875, 5426000, 6782500, 8139000, 10173750, 13565000, 16278000, 20347500, 27130000, 40695000, 81390000]

約数ペア:
[(1, 81390000), (2, 40695000), (3, 27130000), (4, 20347500), (5, 16278000), (6, 13565000), (8, 10173750), (10, 8139000), (12, 6782500), (15, 5426000), (16, 5086875), (20, 4069500), (24, 3391250), (25, 3255600), (30, 2713000), (40, 2034750), (48, 1695625), (50, 1627800), (60, 1356500), (75, 1085200), (80, 1017375), (100, 813900), (120, 678250), (125, 651120), (150, 542600), (200, 406950), (240, 339125), (250, 325560), (300, 271300), (375, 217040), (400, 203475), (500, 162780), (600, 135650), (625, 130224), (750, 108520), (1000, 81390), (1200, 67825), (1250, 65112), (1500, 54260), (1875, 43408), (2000, 40695), (2500, 32556), (2713, 30000), (3000, 27130), (3750, 21704), (5000, 16278), (5426, 15000), (6000, 13565), (7500, 10852), (8139, 10000)]

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