About the Number

129686640

129686639 ← → 129686641

2進数表記:111101110101101110001110000

漢数字表記:一億二千九百六十八万六千六百四十

素因数分解:

2 4 × 3 1 × 5 1 × 31 1 × 17431 1

素因数の和:17478
約数の個数: 80
約数和(自身を含む): 415021056
約数和(自身を除く): 285334416

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 3720, 7440, 17431, 34862, 52293, 69724, 87155, 104586, 139448, 174310, 209172, 261465, 278896, 348620, 418344, 522930, 540361, 697240, 836688, 1045860, 1080722, 1394480, 1621083, 2091720, 2161444, 2701805, 3242166, 4183440, 4322888, 5403610, 6484332, 8105415, 8645776, 10807220, 12968664, 16210830, 21614440, 25937328, 32421660, 43228880, 64843320, 129686640]

約数ペア:
[(1, 129686640), (2, 64843320), (3, 43228880), (4, 32421660), (5, 25937328), (6, 21614440), (8, 16210830), (10, 12968664), (12, 10807220), (15, 8645776), (16, 8105415), (20, 6484332), (24, 5403610), (30, 4322888), (31, 4183440), (40, 3242166), (48, 2701805), (60, 2161444), (62, 2091720), (80, 1621083), (93, 1394480), (120, 1080722), (124, 1045860), (155, 836688), (186, 697240), (240, 540361), (248, 522930), (310, 418344), (372, 348620), (465, 278896), (496, 261465), (620, 209172), (744, 174310), (930, 139448), (1240, 104586), (1488, 87155), (1860, 69724), (2480, 52293), (3720, 34862), (7440, 17431)]

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