About the Number

12985680

12985679 ← → 12985681

2進数表記:110001100010010101010000

漢数字表記:千二百九十八万五千六百八十

素因数分解:

2 4 × 3 1 × 5 1 × 61 1 × 887 1

素因数の和:964
約数の個数: 80
約数和(自身を含む): 40961664
約数和(自身を除く): 27975984

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 61, 80, 120, 122, 183, 240, 244, 305, 366, 488, 610, 732, 887, 915, 976, 1220, 1464, 1774, 1830, 2440, 2661, 2928, 3548, 3660, 4435, 4880, 5322, 7096, 7320, 8870, 10644, 13305, 14192, 14640, 17740, 21288, 26610, 35480, 42576, 53220, 54107, 70960, 106440, 108214, 162321, 212880, 216428, 270535, 324642, 432856, 541070, 649284, 811605, 865712, 1082140, 1298568, 1623210, 2164280, 2597136, 3246420, 4328560, 6492840, 12985680]

約数ペア:
[(1, 12985680), (2, 6492840), (3, 4328560), (4, 3246420), (5, 2597136), (6, 2164280), (8, 1623210), (10, 1298568), (12, 1082140), (15, 865712), (16, 811605), (20, 649284), (24, 541070), (30, 432856), (40, 324642), (48, 270535), (60, 216428), (61, 212880), (80, 162321), (120, 108214), (122, 106440), (183, 70960), (240, 54107), (244, 53220), (305, 42576), (366, 35480), (488, 26610), (610, 21288), (732, 17740), (887, 14640), (915, 14192), (976, 13305), (1220, 10644), (1464, 8870), (1774, 7320), (1830, 7096), (2440, 5322), (2661, 4880), (2928, 4435), (3548, 3660)]

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