About the Number

680978640

680978639 ← → 680978641

2進数表記:101000100101101110100011010000

漢数字表記:六億八千九十七万八千六百四十

素因数分解:

2 4 × 3 1 × 5 1 × 373 1 × 7607 1

素因数の和:7996
約数の個数: 80
約数和(自身を含む): 2116971648
約数和(自身を除く): 1435993008

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 373, 746, 1119, 1492, 1865, 2238, 2984, 3730, 4476, 5595, 5968, 7460, 7607, 8952, 11190, 14920, 15214, 17904, 22380, 22821, 29840, 30428, 38035, 44760, 45642, 60856, 76070, 89520, 91284, 114105, 121712, 152140, 182568, 228210, 304280, 365136, 456420, 608560, 912840, 1825680, 2837411, 5674822, 8512233, 11349644, 14187055, 17024466, 22699288, 28374110, 34048932, 42561165, 45398576, 56748220, 68097864, 85122330, 113496440, 136195728, 170244660, 226992880, 340489320, 680978640]

約数ペア:
[(1, 680978640), (2, 340489320), (3, 226992880), (4, 170244660), (5, 136195728), (6, 113496440), (8, 85122330), (10, 68097864), (12, 56748220), (15, 45398576), (16, 42561165), (20, 34048932), (24, 28374110), (30, 22699288), (40, 17024466), (48, 14187055), (60, 11349644), (80, 8512233), (120, 5674822), (240, 2837411), (373, 1825680), (746, 912840), (1119, 608560), (1492, 456420), (1865, 365136), (2238, 304280), (2984, 228210), (3730, 182568), (4476, 152140), (5595, 121712), (5968, 114105), (7460, 91284), (7607, 89520), (8952, 76070), (11190, 60856), (14920, 45642), (15214, 44760), (17904, 38035), (22380, 30428), (22821, 29840)]

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