About the Number

28001280

28001279 ← → 28001281

2進数表記:1101010110100010000000000

漢数字表記:二千八百万千二百八十

素因数分解:

2 10 × 3 1 × 5 1 × 1823 1

素因数の和:1851
約数の個数: 88
約数和(自身を含む): 89609472
約数和(自身を除く): 61608192

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, 512, 640, 768, 960, 1024, 1280, 1536, 1823, 1920, 2560, 3072, 3646, 3840, 5120, 5469, 7292, 7680, 9115, 10938, 14584, 15360, 18230, 21876, 27345, 29168, 36460, 43752, 54690, 58336, 72920, 87504, 109380, 116672, 145840, 175008, 218760, 233344, 291680, 350016, 437520, 466688, 583360, 700032, 875040, 933376, 1166720, 1400064, 1750080, 1866752, 2333440, 2800128, 3500160, 4666880, 5600256, 7000320, 9333760, 14000640, 28001280]

約数ペア:
[(1, 28001280), (2, 14000640), (3, 9333760), (4, 7000320), (5, 5600256), (6, 4666880), (8, 3500160), (10, 2800128), (12, 2333440), (15, 1866752), (16, 1750080), (20, 1400064), (24, 1166720), (30, 933376), (32, 875040), (40, 700032), (48, 583360), (60, 466688), (64, 437520), (80, 350016), (96, 291680), (120, 233344), (128, 218760), (160, 175008), (192, 145840), (240, 116672), (256, 109380), (320, 87504), (384, 72920), (480, 58336), (512, 54690), (640, 43752), (768, 36460), (960, 29168), (1024, 27345), (1280, 21876), (1536, 18230), (1823, 15360), (1920, 14584), (2560, 10938), (3072, 9115), (3646, 7680), (3840, 7292), (5120, 5469)]

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