About the Number

128490240

128490239 ← → 128490241

2進数表記:111101010001001101100000000

漢数字表記:一億二千八百四十九万二百四十

素因数分解:

2 8 × 3 1 × 5 1 × 33461 1

素因数の和:33485
約数の個数: 72
約数和(自身を含む): 410377968
約数和(自身を除く): 281887728

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 640, 768, 960, 1280, 1920, 3840, 33461, 66922, 100383, 133844, 167305, 200766, 267688, 334610, 401532, 501915, 535376, 669220, 803064, 1003830, 1070752, 1338440, 1606128, 2007660, 2141504, 2676880, 3212256, 4015320, 4283008, 5353760, 6424512, 8030640, 8566016, 10707520, 12849024, 16061280, 21415040, 25698048, 32122560, 42830080, 64245120, 128490240]

約数ペア:
[(1, 128490240), (2, 64245120), (3, 42830080), (4, 32122560), (5, 25698048), (6, 21415040), (8, 16061280), (10, 12849024), (12, 10707520), (15, 8566016), (16, 8030640), (20, 6424512), (24, 5353760), (30, 4283008), (32, 4015320), (40, 3212256), (48, 2676880), (60, 2141504), (64, 2007660), (80, 1606128), (96, 1338440), (120, 1070752), (128, 1003830), (160, 803064), (192, 669220), (240, 535376), (256, 501915), (320, 401532), (384, 334610), (480, 267688), (640, 200766), (768, 167305), (960, 133844), (1280, 100383), (1920, 66922), (3840, 33461)]

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